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Finding the Fourth Proportional to 38,202.72, 57,304 and 21,555.20

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Solution

The fourth proportional to 38,202.72, 57,304 and 21,555.20 is: 32,332.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,202.72 : 57,304 = 21,555.20 : x
  2. Step 2: Convert to fraction form
    38,202.72/57,304 = 21,555.20/x
  3. Step 3: Cross multiply
    38,202.72x = 57,304 × 21,555.20
  4. Step 4: Simplify right side
    38,202.72x = 1,235,199,180.80
  5. Step 5: Solve for x
    x = 1,235,199,180.80/38,202.72
  6. Step 6: Final answer
    x = 32,332.75

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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.