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Finding the Fourth Proportional to 31,917.69, 44,046.44 and 18,489.71

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Solution

The fourth proportional to 31,917.69, 44,046.44 and 18,489.71 is: 25,515.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,917.69 : 44,046.44 = 18,489.71 : x
  2. Step 2: Convert to fraction form
    31,917.69/44,046.44 = 18,489.71/x
  3. Step 3: Cross multiply
    31,917.69x = 44,046.44 × 18,489.71
  4. Step 4: Simplify right side
    31,917.69x = 814,405,902.13
  5. Step 5: Solve for x
    x = 814,405,902.13/31,917.69
  6. Step 6: Final answer
    x = 25,515.82

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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.