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Finding the Fourth Proportional to 17,659.72, 26,489.22 and 7,129.46

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Solution

The fourth proportional to 17,659.72, 26,489.22 and 7,129.46 is: 10,694.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,659.72 : 26,489.22 = 7,129.46 : x
  2. Step 2: Convert to fraction form
    17,659.72/26,489.22 = 7,129.46/x
  3. Step 3: Cross multiply
    17,659.72x = 26,489.22 × 7,129.46
  4. Step 4: Simplify right side
    17,659.72x = 188,853,834.42
  5. Step 5: Solve for x
    x = 188,853,834.42/17,659.72
  6. Step 6: Final answer
    x = 10,694.04

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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.