Home / 31,891.20-47,836.80-9,702.60

Finding the Fourth Proportional to 31,891.20, 47,836.80 and 9,702.60

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Solution

The fourth proportional to 31,891.20, 47,836.80 and 9,702.60 is: 14,553.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,891.20 : 47,836.80 = 9,702.60 : x
  2. Step 2: Convert to fraction form
    31,891.20/47,836.80 = 9,702.60/x
  3. Step 3: Cross multiply
    31,891.20x = 47,836.80 × 9,702.60
  4. Step 4: Simplify right side
    31,891.20x = 464,141,335.68
  5. Step 5: Solve for x
    x = 464,141,335.68/31,891.20
  6. Step 6: Final answer
    x = 14,553.90

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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.