⚖️ Ratio Calculator

3 : 4 = 12 : 16

D = 16

Simplified ratio

3 : 4

Ratio as a decimal

0.75

Step by step

1. Write the proportion as fractions: A/B = C/D
2. Cross-multiply: A × D = B × C
3. D = B × C ÷ A = 4 × 12 ÷ 3 = 16
4. Check: 3 ÷ 4 = 0.75 and 12 ÷ 16 = 0.75