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Finding the Fourth Proportional to 16,478.28, 24,726.12 and 8,687.88

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Solution

The fourth proportional to 16,478.28, 24,726.12 and 8,687.88 is: 13,036.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,478.28 : 24,726.12 = 8,687.88 : x
  2. Step 2: Convert to fraction form
    16,478.28/24,726.12 = 8,687.88/x
  3. Step 3: Cross multiply
    16,478.28x = 24,726.12 × 8,687.88
  4. Step 4: Simplify right side
    16,478.28x = 214,817,563.43
  5. Step 5: Solve for x
    x = 214,817,563.43/16,478.28
  6. Step 6: Final answer
    x = 13,036.41

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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.