Home / 38,487.20-57,732.80-18,782.56

Finding the Fourth Proportional to 38,487.20, 57,732.80 and 18,782.56

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Solution

The fourth proportional to 38,487.20, 57,732.80 and 18,782.56 is: 28,174.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,487.20 : 57,732.80 = 18,782.56 : x
  2. Step 2: Convert to fraction form
    38,487.20/57,732.80 = 18,782.56/x
  3. Step 3: Cross multiply
    38,487.20x = 57,732.80 × 18,782.56
  4. Step 4: Simplify right side
    38,487.20x = 1,084,369,779.97
  5. Step 5: Solve for x
    x = 1,084,369,779.97/38,487.20
  6. Step 6: Final answer
    x = 28,174.82

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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.