Home / 20,961-27,978

Finding the Third Proportional to 20,961 and 27,978

Calculator

Solution

The third proportional to 20,961 and 27,978 is: 37,344.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961 : 27,978 = 27,978 : x
  2. Step 2: Convert to fraction form
    20,961/27,978 = 27,978/x
  3. Step 3: Cross multiply
    20,961x = 27,978 × 27,978
  4. Step 4: Simplify right side
    20,961x = 782,768,484
  5. Step 5: Solve for x
    x = 782,768,484/20,961
  6. Step 6: Final answer
    x = 37,344.04

Related Problems

Find third proportional to 10,480.50 and 13,989
Half scale
Find third proportional to 41,922 and 55,956
Double scale
Find third proportional to 20,963 and 27,981
Similar ratio
Find third proportional to 31,441.50 and 41,967
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.