Home / 29,209.85-40,309.53-15,781.06

Finding the Fourth Proportional to 29,209.85, 40,309.53 and 15,781.06

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Solution

The fourth proportional to 29,209.85, 40,309.53 and 15,781.06 is: 21,777.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,209.85 : 40,309.53 = 15,781.06 : x
  2. Step 2: Convert to fraction form
    29,209.85/40,309.53 = 15,781.06/x
  3. Step 3: Cross multiply
    29,209.85x = 40,309.53 × 15,781.06
  4. Step 4: Simplify right side
    29,209.85x = 636,126,909.95
  5. Step 5: Solve for x
    x = 636,126,909.95/29,209.85
  6. Step 6: Final answer
    x = 21,777.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.