Home / 31,867.78-43,978.74-17,721.64

Finding the Fourth Proportional to 31,867.78, 43,978.74 and 17,721.64

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Solution

The fourth proportional to 31,867.78, 43,978.74 and 17,721.64 is: 24,456.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,867.78 : 43,978.74 = 17,721.64 : x
  2. Step 2: Convert to fraction form
    31,867.78/43,978.74 = 17,721.64/x
  3. Step 3: Cross multiply
    31,867.78x = 43,978.74 × 17,721.64
  4. Step 4: Simplify right side
    31,867.78x = 779,375,397.93
  5. Step 5: Solve for x
    x = 779,375,397.93/31,867.78
  6. Step 6: Final answer
    x = 24,456.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.