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Finding the Fourth Proportional to 16,660.08, 24,960.96 and 9,720

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Solution

The fourth proportional to 16,660.08, 24,960.96 and 9,720 is: 14,562.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,660.08 : 24,960.96 = 9,720 : x
  2. Step 2: Convert to fraction form
    16,660.08/24,960.96 = 9,720/x
  3. Step 3: Cross multiply
    16,660.08x = 24,960.96 × 9,720
  4. Step 4: Simplify right side
    16,660.08x = 242,620,531.20
  5. Step 5: Solve for x
    x = 242,620,531.20/16,660.08
  6. Step 6: Final answer
    x = 14,562.99

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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.