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Finding the Fourth Proportional to 38,481.50, 57,727.20 and 10,779.50

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Solution

The fourth proportional to 38,481.50, 57,727.20 and 10,779.50 is: 16,170.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,481.50 : 57,727.20 = 10,779.50 : x
  2. Step 2: Convert to fraction form
    38,481.50/57,727.20 = 10,779.50/x
  3. Step 3: Cross multiply
    38,481.50x = 57,727.20 × 10,779.50
  4. Step 4: Simplify right side
    38,481.50x = 622,270,352.40
  5. Step 5: Solve for x
    x = 622,270,352.40/38,481.50
  6. Step 6: Final answer
    x = 16,170.64

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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.