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Finding the Fourth Proportional to 36,234.40, 54,308.40 and 18,695.20

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Solution

The fourth proportional to 36,234.40, 54,308.40 and 18,695.20 is: 28,020.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,234.40 : 54,308.40 = 18,695.20 : x
  2. Step 2: Convert to fraction form
    36,234.40/54,308.40 = 18,695.20/x
  3. Step 3: Cross multiply
    36,234.40x = 54,308.40 × 18,695.20
  4. Step 4: Simplify right side
    36,234.40x = 1,015,306,399.68
  5. Step 5: Solve for x
    x = 1,015,306,399.68/36,234.40
  6. Step 6: Final answer
    x = 28,020.51

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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.