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Finding the Fourth Proportional to 38,237.80, 57,364.80 and 11,581.60

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Solution

The fourth proportional to 38,237.80, 57,364.80 and 11,581.60 is: 17,374.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,237.80 : 57,364.80 = 11,581.60 : x
  2. Step 2: Convert to fraction form
    38,237.80/57,364.80 = 11,581.60/x
  3. Step 3: Cross multiply
    38,237.80x = 57,364.80 × 11,581.60
  4. Step 4: Simplify right side
    38,237.80x = 664,376,167.68
  5. Step 5: Solve for x
    x = 664,376,167.68/38,237.80
  6. Step 6: Final answer
    x = 17,374.85

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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.