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Finding the Fourth Proportional to 43,489.52, 65,234.90 and 12,324.78

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Solution

The fourth proportional to 43,489.52, 65,234.90 and 12,324.78 is: 18,487.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,489.52 : 65,234.90 = 12,324.78 : x
  2. Step 2: Convert to fraction form
    43,489.52/65,234.90 = 12,324.78/x
  3. Step 3: Cross multiply
    43,489.52x = 65,234.90 × 12,324.78
  4. Step 4: Simplify right side
    43,489.52x = 804,005,790.82
  5. Step 5: Solve for x
    x = 804,005,790.82/43,489.52
  6. Step 6: Final answer
    x = 18,487.35

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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.