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Finding the Fourth Proportional to 11,659.72, 16,089.78 and 6,691.72

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Solution

The fourth proportional to 11,659.72, 16,089.78 and 6,691.72 is: 9,234.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,659.72 : 16,089.78 = 6,691.72 : x
  2. Step 2: Convert to fraction form
    11,659.72/16,089.78 = 6,691.72/x
  3. Step 3: Cross multiply
    11,659.72x = 16,089.78 × 6,691.72
  4. Step 4: Simplify right side
    11,659.72x = 107,668,302.62
  5. Step 5: Solve for x
    x = 107,668,302.62/11,659.72
  6. Step 6: Final answer
    x = 9,234.21

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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.