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Finding the Fourth Proportional to 16,691.60, 23,036.88 and 9,616.88

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Solution

The fourth proportional to 16,691.60, 23,036.88 and 9,616.88 is: 13,272.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,691.60 : 23,036.88 = 9,616.88 : x
  2. Step 2: Convert to fraction form
    16,691.60/23,036.88 = 9,616.88/x
  3. Step 3: Cross multiply
    16,691.60x = 23,036.88 × 9,616.88
  4. Step 4: Simplify right side
    16,691.60x = 221,542,910.53
  5. Step 5: Solve for x
    x = 221,542,910.53/16,691.60
  6. Step 6: Final answer
    x = 13,272.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.