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Finding the Fourth Proportional to 18,518.88, 27,781.20 and 6,204

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Solution

The fourth proportional to 18,518.88, 27,781.20 and 6,204 is: 9,306.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,518.88 : 27,781.20 = 6,204 : x
  2. Step 2: Convert to fraction form
    18,518.88/27,781.20 = 6,204/x
  3. Step 3: Cross multiply
    18,518.88x = 27,781.20 × 6,204
  4. Step 4: Simplify right side
    18,518.88x = 172,354,564.80
  5. Step 5: Solve for x
    x = 172,354,564.80/18,518.88
  6. Step 6: Final answer
    x = 9,306.96

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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.