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Finding the Fourth Proportional to 38,474.40, 57,722.40 and 18,753.60

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Solution

The fourth proportional to 38,474.40, 57,722.40 and 18,753.60 is: 28,135.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,474.40 : 57,722.40 = 18,753.60 : x
  2. Step 2: Convert to fraction form
    38,474.40/57,722.40 = 18,753.60/x
  3. Step 3: Cross multiply
    38,474.40x = 57,722.40 × 18,753.60
  4. Step 4: Simplify right side
    38,474.40x = 1,082,502,800.64
  5. Step 5: Solve for x
    x = 1,082,502,800.64/38,474.40
  6. Step 6: Final answer
    x = 28,135.66

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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.