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Finding the Fourth Proportional to 30,387.72, 45,542.70 and 15,593.88

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Solution

The fourth proportional to 30,387.72, 45,542.70 and 15,593.88 is: 23,370.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,387.72 : 45,542.70 = 15,593.88 : x
  2. Step 2: Convert to fraction form
    30,387.72/45,542.70 = 15,593.88/x
  3. Step 3: Cross multiply
    30,387.72x = 45,542.70 × 15,593.88
  4. Step 4: Simplify right side
    30,387.72x = 710,187,398.68
  5. Step 5: Solve for x
    x = 710,187,398.68/30,387.72
  6. Step 6: Final answer
    x = 23,370.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.