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Finding the Fourth Proportional to 18,234.20, 27,375.60 and 14,540.60

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Solution

The fourth proportional to 18,234.20, 27,375.60 and 14,540.60 is: 21,830.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,234.20 : 27,375.60 = 14,540.60 : x
  2. Step 2: Convert to fraction form
    18,234.20/27,375.60 = 14,540.60/x
  3. Step 3: Cross multiply
    18,234.20x = 27,375.60 × 14,540.60
  4. Step 4: Simplify right side
    18,234.20x = 398,057,649.36
  5. Step 5: Solve for x
    x = 398,057,649.36/18,234.20
  6. Step 6: Final answer
    x = 21,830.28

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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.