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Finding the Fourth Proportional to 39,540.56, 59,304.56 and 18,495.20

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Solution

The fourth proportional to 39,540.56, 59,304.56 and 18,495.20 is: 27,739.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,540.56 : 59,304.56 = 18,495.20 : x
  2. Step 2: Convert to fraction form
    39,540.56/59,304.56 = 18,495.20/x
  3. Step 3: Cross multiply
    39,540.56x = 59,304.56 × 18,495.20
  4. Step 4: Simplify right side
    39,540.56x = 1,096,849,753.90
  5. Step 5: Solve for x
    x = 1,096,849,753.90/39,540.56
  6. Step 6: Final answer
    x = 27,739.87

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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.