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Finding the Fourth Proportional to 38,730.80, 58,117.80 and 16,540.40

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Solution

The fourth proportional to 38,730.80, 58,117.80 and 16,540.40 is: 24,819.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,730.80 : 58,117.80 = 16,540.40 : x
  2. Step 2: Convert to fraction form
    38,730.80/58,117.80 = 16,540.40/x
  3. Step 3: Cross multiply
    38,730.80x = 58,117.80 × 16,540.40
  4. Step 4: Simplify right side
    38,730.80x = 961,291,659.12
  5. Step 5: Solve for x
    x = 961,291,659.12/38,730.80
  6. Step 6: Final answer
    x = 24,819.82

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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.