Ratio calculator
Math
Ratio calculator
How much keeps the same ratio?
Example values are filled in. Replace them with your own.
Example calculation
The matching ratio is 10 : 15, equivalent to 2 : 3.
X
15
The missing number keeps the same proportion as the first pair.
See formula and assumptions
X = B × C ÷ A
- A
- Example: 2. Enter the number only.
- B
- Example: 3. Enter the number only.
- C
- Example: 10. Enter the number only.