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Finding the Fourth Proportional to 14,691.98, 21,982.88 and 8,747.12

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Solution

The fourth proportional to 14,691.98, 21,982.88 and 8,747.12 is: 13,087.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,691.98 : 21,982.88 = 8,747.12 : x
  2. Step 2: Convert to fraction form
    14,691.98/21,982.88 = 8,747.12/x
  3. Step 3: Cross multiply
    14,691.98x = 21,982.88 × 8,747.12
  4. Step 4: Simplify right side
    14,691.98x = 192,286,889.31
  5. Step 5: Solve for x
    x = 192,286,889.31/14,691.98
  6. Step 6: Final answer
    x = 13,087.88

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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.