Ratio Calculator
Solve A : B = C : D for the missing value and simplify a ratio.
D (so that A : B = C : D)
12
- A : B simplified
- 3 : 4
- A : B as 1 : n
- 1 : 1.333333333
Show the work
Cross-multiply: A × D = B × C
B × C
4 × 9 = 36
Divide by A
D = B × C ÷ A
36 ÷ 3 = 12
How it works
A : B = C : D → D = B × C ÷ A
Questions
- How does the ratio calculator work?
- A : B = C : D → D = B × C ÷ A.
- What do I need to enter?
- A, B, C. Optional fields can be left blank.
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