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Finding the Fourth Proportional to 18,324.56, 27,489.60 and 6,640.52

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Solution

The fourth proportional to 18,324.56, 27,489.60 and 6,640.52 is: 9,961.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,324.56 : 27,489.60 = 6,640.52 : x
  2. Step 2: Convert to fraction form
    18,324.56/27,489.60 = 6,640.52/x
  3. Step 3: Cross multiply
    18,324.56x = 27,489.60 × 6,640.52
  4. Step 4: Simplify right side
    18,324.56x = 182,545,238.59
  5. Step 5: Solve for x
    x = 182,545,238.59/18,324.56
  6. Step 6: Final answer
    x = 9,961.78

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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.