Home / 31,481.24-47,221.88-10,415.61

Finding the Fourth Proportional to 31,481.24, 47,221.88 and 10,415.61

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Solution

The fourth proportional to 31,481.24, 47,221.88 and 10,415.61 is: 15,623.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,481.24 : 47,221.88 = 10,415.61 : x
  2. Step 2: Convert to fraction form
    31,481.24/47,221.88 = 10,415.61/x
  3. Step 3: Cross multiply
    31,481.24x = 47,221.88 × 10,415.61
  4. Step 4: Simplify right side
    31,481.24x = 491,844,633.47
  5. Step 5: Solve for x
    x = 491,844,633.47/31,481.24
  6. Step 6: Final answer
    x = 15,623.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.