Home / 31,514.54-47,270.15-11,791.61

Finding the Fourth Proportional to 31,514.54, 47,270.15 and 11,791.61

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Solution

The fourth proportional to 31,514.54, 47,270.15 and 11,791.61 is: 17,686.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,514.54 : 47,270.15 = 11,791.61 : x
  2. Step 2: Convert to fraction form
    31,514.54/47,270.15 = 11,791.61/x
  3. Step 3: Cross multiply
    31,514.54x = 47,270.15 × 11,791.61
  4. Step 4: Simplify right side
    31,514.54x = 557,390,878.13
  5. Step 5: Solve for x
    x = 557,390,878.13/31,514.54
  6. Step 6: Final answer
    x = 17,686.78

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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.