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Finding the Fourth Proportional to 18,229.80, 27,344.70 and 9,906.60

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Solution

The fourth proportional to 18,229.80, 27,344.70 and 9,906.60 is: 14,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,229.80 : 27,344.70 = 9,906.60 : x
  2. Step 2: Convert to fraction form
    18,229.80/27,344.70 = 9,906.60/x
  3. Step 3: Cross multiply
    18,229.80x = 27,344.70 × 9,906.60
  4. Step 4: Simplify right side
    18,229.80x = 270,893,005.02
  5. Step 5: Solve for x
    x = 270,893,005.02/18,229.80
  6. Step 6: Final answer
    x = 14,859.90

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1.5x scale

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.