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Finding the Fourth Proportional to 12,481.26, 17,223.96 and 6,815.88

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Solution

The fourth proportional to 12,481.26, 17,223.96 and 6,815.88 is: 9,405.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481.26 : 17,223.96 = 6,815.88 : x
  2. Step 2: Convert to fraction form
    12,481.26/17,223.96 = 6,815.88/x
  3. Step 3: Cross multiply
    12,481.26x = 17,223.96 × 6,815.88
  4. Step 4: Simplify right side
    12,481.26x = 117,396,444.48
  5. Step 5: Solve for x
    x = 117,396,444.48/12,481.26
  6. Step 6: Final answer
    x = 9,405.82

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1.5x scale

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.