Home / 31,251.24-43,120.62-18,680.04

Finding the Fourth Proportional to 31,251.24, 43,120.62 and 18,680.04

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Solution

The fourth proportional to 31,251.24, 43,120.62 and 18,680.04 is: 25,774.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,251.24 : 43,120.62 = 18,680.04 : x
  2. Step 2: Convert to fraction form
    31,251.24/43,120.62 = 18,680.04/x
  3. Step 3: Cross multiply
    31,251.24x = 43,120.62 × 18,680.04
  4. Step 4: Simplify right side
    31,251.24x = 805,494,906.42
  5. Step 5: Solve for x
    x = 805,494,906.42/31,251.24
  6. Step 6: Final answer
    x = 25,774.81

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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.