Home / 31,778.52-43,851.12-18,354.06

Finding the Fourth Proportional to 31,778.52, 43,851.12 and 18,354.06

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Solution

The fourth proportional to 31,778.52, 43,851.12 and 18,354.06 is: 25,326.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,778.52 : 43,851.12 = 18,354.06 : x
  2. Step 2: Convert to fraction form
    31,778.52/43,851.12 = 18,354.06/x
  3. Step 3: Cross multiply
    31,778.52x = 43,851.12 × 18,354.06
  4. Step 4: Simplify right side
    31,778.52x = 804,846,087.55
  5. Step 5: Solve for x
    x = 804,846,087.55/31,778.52
  6. Step 6: Final answer
    x = 25,326.73

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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.