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Finding the Fourth Proportional to 28,382.88, 42,553.51 and 9,657.88

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Solution

The fourth proportional to 28,382.88, 42,553.51 and 9,657.88 is: 14,479.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,382.88 : 42,553.51 = 9,657.88 : x
  2. Step 2: Convert to fraction form
    28,382.88/42,553.51 = 9,657.88/x
  3. Step 3: Cross multiply
    28,382.88x = 42,553.51 × 9,657.88
  4. Step 4: Simplify right side
    28,382.88x = 410,976,869.90
  5. Step 5: Solve for x
    x = 410,976,869.90/28,382.88
  6. Step 6: Final answer
    x = 14,479.74

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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.