Find the Missing Value in Proportion: Worksheets, Online Test and Calculators

Find the missing value in proportion worksheets, solved worksheet problems or exercises with step-by-step work, formative assessment as online test, calculator and more learning resources to learn, practice, assess and master the basic math skills of ratio and proportion.

Find the Missing Value in Proportion
Name Grade School
Date Questions10 Score

1
Find the value of x in the proportion
21: x = 42:12
2
Find the value of x in the proportion
x :23 = 128:184
3
Find the value of x in the proportion
5: x = 45:54
4
Find the value of x in the proportion
20:11 = x:66
5
Find the value of x in the proportion
2:7 = 10: x
6
Find the value of x in the proportion
25:13 = 225: x
7
Find the value of x in the proportion
3:22 = x:176
8
Find the value of x in the proportion
7: x = 14:48
9
Find the value of x in the proportion
16: x = 48:15
10
Find the value of x in the proportion
x :7 = 18:63

Solved Worksheet Problems
Show All Workout
1
Find the value of x in the proportion
21: 6 = 42:12
step 1
Write the given ratios in fraction form
21:y =
21y
42:12 =
4212
step 2
Find the Means & Extremes
21y
=
4212
21 x 12 = 42 x y
Extremes = 21, 12
Means = 42, y
step 3
Rearrange the statement to find y
y =
21 x 1242
y = 6
step 4
The missing term in the proportion is 6
Therefore the proportion is 21: 6 = 42:12
2
Find the value of x in the proportion
16:23 = 128:184
step 1
Write the given ratios in fraction form
y:23 =
y23
128:184 =
128184
step 2
Find the Means & Extremes
y23
=
128184
x 184 = 128 x 23
Extremes = 184, y
Means = 128, 23
step 3
Rearrange the statement to find y
y =
128 x 23184
y = 16
step 4
The missing term in the proportion is 16
Therefore the proportion is 16:23 = 128:184
3
Find the value of x in the proportion
5: 6 = 45:54
step 1
Write the given ratios in fraction form
5:y =
5y
45:54 =
4554
step 2
Find the Means & Extremes
5y
=
4554
5 x 54 = 45 x y
Extremes = 5, 54
Means = 45, y
step 3
Rearrange the statement to find y
y =
5 x 5445
y = 6
step 4
The missing term in the proportion is 6
Therefore the proportion is 5: 6 = 45:54
4
Find the value of x in the proportion
20:11 = 120:66
step 1
Write the given ratios in fraction form
20:11 =
2011
y:11 =
y66
step 2
Find the Means & Extremes
2011
=
y66
20 x 66 = y x 11
Extremes = 20, 66
Means = 11, y
step 3
Rearrange the statement to find y
y =
20 x 6611
y = 120
step 4
The missing term in the proportion is 120
Therefore the proportion is 20:11 = 120:66
5
Find the value of x in the proportion
2:7 = 10:35
step 1
Write the given ratios in fraction form
2:7 =
27
10:y =
10y
step 2
Find the Means & Extremes
27
=
10y
2 x y = 10 x 7
Extremes = 2, y
Means = 10, 7
step 3
Rearrange the statement to find y
y =
10 x 72
y = 35
step 4
The missing term in the proportion is 35
Therefore the proportion is 2:7 = 10:35
6
Find the value of x in the proportion
25:13 = 225:117
step 1
Write the given ratios in fraction form
25:13 =
2513
225:y =
225y
step 2
Find the Means & Extremes
2513
=
225y
25 x y = 225 x 13
Extremes = 25, y
Means = 225, 13
step 3
Rearrange the statement to find y
y =
225 x 1325
y = 117
step 4
The missing term in the proportion is 117
Therefore the proportion is 25:13 = 225:117
7
Find the value of x in the proportion
3:22 = 24:176
step 1
Write the given ratios in fraction form
3:22 =
322
y:22 =
y176
step 2
Find the Means & Extremes
322
=
y176
3 x 176 = y x 22
Extremes = 3, 176
Means = 22, y
step 3
Rearrange the statement to find y
y =
3 x 17622
y = 24
step 4
The missing term in the proportion is 24
Therefore the proportion is 3:22 = 24:176
8
Find the value of x in the proportion
7: 24 = 14:48
step 1
Write the given ratios in fraction form
7:y =
7y
14:48 =
1448
step 2
Find the Means & Extremes
7y
=
1448
7 x 48 = 14 x y
Extremes = 7, 48
Means = 14, y
step 3
Rearrange the statement to find y
y =
7 x 4814
y = 24
step 4
The missing term in the proportion is 24
Therefore the proportion is 7: 24 = 14:48
9
Find the value of x in the proportion
16: 5 = 48:15
step 1
Write the given ratios in fraction form
16:y =
16y
48:15 =
4815
step 2
Find the Means & Extremes
16y
=
4815
16 x 15 = 48 x y
Extremes = 16, 15
Means = 48, y
step 3
Rearrange the statement to find y
y =
16 x 1548
y = 5
step 4
The missing term in the proportion is 5
Therefore the proportion is 16: 5 = 48:15
10
Find the value of x in the proportion
2:7 = 18:63
step 1
Write the given ratios in fraction form
y:7 =
y7
18:63 =
1863
step 2
Find the Means & Extremes
y7
=
1863
x 63 = 18 x 7
Extremes = 63, y
Means = 18, 7
step 3
Rearrange the statement to find y
y =
18 x 763
y = 2
step 4
The missing term in the proportion is 2
Therefore the proportion is 2:7 = 18:63

Worksheet: Find the Missing Value in Proportion

Find the missing value in proportion worksheet is the largest collection of practice problems and solved exercises which can be served as homework, classwork or assignment problems for the students to learn, practice, assess, iterate and master the skills of how to solve such ratio and proportion problems in basic mathematics.

Online Test
00:00
Start my Challenge
Find the value of x in the proportion
17:19 = x:190
Find the value of x in the proportion
15:x = 60:92
Find the value of x in the proportion
20:16 = 180:x
Find the value of x in the proportion
x:21 = 18:189
Find the value of x in the proportion
19:13 = x:26
Find the value of x in the proportion
22:19 = x:133
Find the value of x in the proportion
x:13 = 84:78
Find the value of x in the proportion
x:14 = 70:140
Find the value of x in the proportion
7:x = 70:210
Find the value of x in the proportion
19:17 = x:68

Online Test: Find the Missing Value in Proportion

This online test to find the missing value in proportion is a formative assessment which can be used as homework, classwork or assignment problems to assess and improve the learner's math skills on ratio and proportion.

Missing Number in Proportion Calculator

: :
3:6 :: 5:10
x = 5
show workout

Work with steps - Find Missing Number in Proportion

Question:
Find the unknown value of x in the proportion.
3:6 :: x:10
Answer:
step 1
Write the given ratios in fraction form
3:6 =
36
x:10 =
x10
step 2
Find the Means & Extremes
36
=
x10
3 x 10 = x x 6
Extremes = 3, 10
Means = 6, x
step 3
Rearrange the statement to find x
x =
3 x 106
x = 5
step 4
The missing term in the proportion is 5
Therefore the proportion is 3:6 = 5:10

Missing number in proportion calculator is a key tool for users to generate step-by-step work to quickly understand the calculation, solve the homework problems, solve the classwork problems, prepare the answer key document for summative and formative assessments or immediately verify the entire calculation for the user supplied input values.