Home / 38,442.78-57,663.99-12,147.48

Finding the Fourth Proportional to 38,442.78, 57,663.99 and 12,147.48

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Solution

The fourth proportional to 38,442.78, 57,663.99 and 12,147.48 is: 18,221.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,442.78 : 57,663.99 = 12,147.48 : x
  2. Step 2: Convert to fraction form
    38,442.78/57,663.99 = 12,147.48/x
  3. Step 3: Cross multiply
    38,442.78x = 57,663.99 × 12,147.48
  4. Step 4: Simplify right side
    38,442.78x = 700,472,165.25
  5. Step 5: Solve for x
    x = 700,472,165.25/38,442.78
  6. Step 6: Final answer
    x = 18,221.16

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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.