Home / 31,879.18-43,992.62-17,731.72

Finding the Fourth Proportional to 31,879.18, 43,992.62 and 17,731.72

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Solution

The fourth proportional to 31,879.18, 43,992.62 and 17,731.72 is: 24,469.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,879.18 : 43,992.62 = 17,731.72 : x
  2. Step 2: Convert to fraction form
    31,879.18/43,992.62 = 17,731.72/x
  3. Step 3: Cross multiply
    31,879.18x = 43,992.62 × 17,731.72
  4. Step 4: Simplify right side
    31,879.18x = 780,064,819.91
  5. Step 5: Solve for x
    x = 780,064,819.91/31,879.18
  6. Step 6: Final answer
    x = 24,469.41

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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.