Home / 38,238.62-57,375-19,508.78

Finding the Fourth Proportional to 38,238.62, 57,375 and 19,508.78

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Solution

The fourth proportional to 38,238.62, 57,375 and 19,508.78 is: 29,271.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,238.62 : 57,375 = 19,508.78 : x
  2. Step 2: Convert to fraction form
    38,238.62/57,375 = 19,508.78/x
  3. Step 3: Cross multiply
    38,238.62x = 57,375 × 19,508.78
  4. Step 4: Simplify right side
    38,238.62x = 1,119,316,395.94
  5. Step 5: Solve for x
    x = 1,119,316,395.94/38,238.62
  6. Step 6: Final answer
    x = 29,271.89

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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.