Home / 31,646.75-47,442.19-11,939.15

Finding the Fourth Proportional to 31,646.75, 47,442.19 and 11,939.15

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Solution

The fourth proportional to 31,646.75, 47,442.19 and 11,939.15 is: 17,898.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,646.75 : 47,442.19 = 11,939.15 : x
  2. Step 2: Convert to fraction form
    31,646.75/47,442.19 = 11,939.15/x
  3. Step 3: Cross multiply
    31,646.75x = 47,442.19 × 11,939.15
  4. Step 4: Simplify right side
    31,646.75x = 566,419,422.74
  5. Step 5: Solve for x
    x = 566,419,422.74/31,646.75
  6. Step 6: Final answer
    x = 17,898.19

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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.