Home / 21,321-29,209.50

Finding the Third Proportional to 21,321 and 29,209.50

Calculator

Solution

The third proportional to 21,321 and 29,209.50 is: 40,016.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321 : 29,209.50 = 29,209.50 : x
  2. Step 2: Convert to fraction form
    21,321/29,209.50 = 29,209.50/x
  3. Step 3: Cross multiply
    21,321x = 29,209.50 × 29,209.50
  4. Step 4: Simplify right side
    21,321x = 853,194,890.25
  5. Step 5: Solve for x
    x = 853,194,890.25/21,321
  6. Step 6: Final answer
    x = 40,016.65

Related Problems

Find third proportional to 10,660.50 and 14,604.75
Half scale
Find third proportional to 42,642 and 58,419
Double scale
Find third proportional to 21,323 and 29,212
Similar ratio
Find third proportional to 31,981.50 and 43,814.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.