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Finding the Fourth Proportional to 12,658.14, 17,451.86 and 8,672.13

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Solution

The fourth proportional to 12,658.14, 17,451.86 and 8,672.13 is: 11,956.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,658.14 : 17,451.86 = 8,672.13 : x
  2. Step 2: Convert to fraction form
    12,658.14/17,451.86 = 8,672.13/x
  3. Step 3: Cross multiply
    12,658.14x = 17,451.86 × 8,672.13
  4. Step 4: Simplify right side
    12,658.14x = 151,344,755.30
  5. Step 5: Solve for x
    x = 151,344,755.30/12,658.14
  6. Step 6: Final answer
    x = 11,956.32

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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.