Home / 31,262.52-43,140.78-17,115

Finding the Fourth Proportional to 31,262.52, 43,140.78 and 17,115

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Solution

The fourth proportional to 31,262.52, 43,140.78 and 17,115 is: 23,617.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,262.52 : 43,140.78 = 17,115 : x
  2. Step 2: Convert to fraction form
    31,262.52/43,140.78 = 17,115/x
  3. Step 3: Cross multiply
    31,262.52x = 43,140.78 × 17,115
  4. Step 4: Simplify right side
    31,262.52x = 738,354,449.70
  5. Step 5: Solve for x
    x = 738,354,449.70/31,262.52
  6. Step 6: Final answer
    x = 23,617.88

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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.