Home / 31,909.88-47,850.24-11,128.52

Finding the Fourth Proportional to 31,909.88, 47,850.24 and 11,128.52

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Solution

The fourth proportional to 31,909.88, 47,850.24 and 11,128.52 is: 16,687.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,909.88 : 47,850.24 = 11,128.52 : x
  2. Step 2: Convert to fraction form
    31,909.88/47,850.24 = 11,128.52/x
  3. Step 3: Cross multiply
    31,909.88x = 47,850.24 × 11,128.52
  4. Step 4: Simplify right side
    31,909.88x = 532,502,352.84
  5. Step 5: Solve for x
    x = 532,502,352.84/31,909.88
  6. Step 6: Final answer
    x = 16,687.70

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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.