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Finding the Fourth Proportional to 28,473.31, 42,711.11 and 10,702.11

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Solution

The fourth proportional to 28,473.31, 42,711.11 and 10,702.11 is: 16,053.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473.31 : 42,711.11 = 10,702.11 : x
  2. Step 2: Convert to fraction form
    28,473.31/42,711.11 = 10,702.11/x
  3. Step 3: Cross multiply
    28,473.31x = 42,711.11 × 10,702.11
  4. Step 4: Simplify right side
    28,473.31x = 457,098,997.44
  5. Step 5: Solve for x
    x = 457,098,997.44/28,473.31
  6. Step 6: Final answer
    x = 16,053.60

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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.