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Finding the Fourth Proportional to 16,387.60, 24,532.80 and 9,810.40

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Solution

The fourth proportional to 16,387.60, 24,532.80 and 9,810.40 is: 14,686.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,387.60 : 24,532.80 = 9,810.40 : x
  2. Step 2: Convert to fraction form
    16,387.60/24,532.80 = 9,810.40/x
  3. Step 3: Cross multiply
    16,387.60x = 24,532.80 × 9,810.40
  4. Step 4: Simplify right side
    16,387.60x = 240,676,581.12
  5. Step 5: Solve for x
    x = 240,676,581.12/16,387.60
  6. Step 6: Final answer
    x = 14,686.51

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1.5x scale

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.