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Finding the Fourth Proportional to 28,339.47, 42,500.13 and 9,359.88

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Solution

The fourth proportional to 28,339.47, 42,500.13 and 9,359.88 is: 14,036.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,339.47 : 42,500.13 = 9,359.88 : x
  2. Step 2: Convert to fraction form
    28,339.47/42,500.13 = 9,359.88/x
  3. Step 3: Cross multiply
    28,339.47x = 42,500.13 × 9,359.88
  4. Step 4: Simplify right side
    28,339.47x = 397,796,116.78
  5. Step 5: Solve for x
    x = 397,796,116.78/28,339.47
  6. Step 6: Final answer
    x = 14,036.82

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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.