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Finding the Fourth Proportional to 17,679.52, 24,397.92 and 9,721.90

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Solution

The fourth proportional to 17,679.52, 24,397.92 and 9,721.90 is: 13,416.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,679.52 : 24,397.92 = 9,721.90 : x
  2. Step 2: Convert to fraction form
    17,679.52/24,397.92 = 9,721.90/x
  3. Step 3: Cross multiply
    17,679.52x = 24,397.92 × 9,721.90
  4. Step 4: Simplify right side
    17,679.52x = 237,194,138.45
  5. Step 5: Solve for x
    x = 237,194,138.45/17,679.52
  6. Step 6: Final answer
    x = 13,416.32

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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.