Home / 21,680-29,448

Finding the Third Proportional to 21,680 and 29,448

Calculator

Solution

The third proportional to 21,680 and 29,448 is: 39,999.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680 : 29,448 = 29,448 : x
  2. Step 2: Convert to fraction form
    21,680/29,448 = 29,448/x
  3. Step 3: Cross multiply
    21,680x = 29,448 × 29,448
  4. Step 4: Simplify right side
    21,680x = 867,184,704
  5. Step 5: Solve for x
    x = 867,184,704/21,680
  6. Step 6: Final answer
    x = 39,999.29

Related Problems

Find third proportional to 10,840 and 14,724
Half scale
Find third proportional to 43,360 and 58,896
Double scale
Find third proportional to 21,682 and 29,451
Similar ratio
Find third proportional to 32,520 and 44,172
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.