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Finding the Fourth Proportional to 10,924.80, 16,387.20 and 9,499.20

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Solution

The fourth proportional to 10,924.80, 16,387.20 and 9,499.20 is: 14,248.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,924.80 : 16,387.20 = 9,499.20 : x
  2. Step 2: Convert to fraction form
    10,924.80/16,387.20 = 9,499.20/x
  3. Step 3: Cross multiply
    10,924.80x = 16,387.20 × 9,499.20
  4. Step 4: Simplify right side
    10,924.80x = 155,665,290.24
  5. Step 5: Solve for x
    x = 155,665,290.24/10,924.80
  6. Step 6: Final answer
    x = 14,248.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.