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Finding the Fourth Proportional to 11,481.89, 15,850.98 and 7,239.11

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Solution

The fourth proportional to 11,481.89, 15,850.98 and 7,239.11 is: 9,993.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,481.89 : 15,850.98 = 7,239.11 : x
  2. Step 2: Convert to fraction form
    11,481.89/15,850.98 = 7,239.11/x
  3. Step 3: Cross multiply
    11,481.89x = 15,850.98 × 7,239.11
  4. Step 4: Simplify right side
    11,481.89x = 114,746,908.57
  5. Step 5: Solve for x
    x = 114,746,908.57/11,481.89
  6. Step 6: Final answer
    x = 9,993.73

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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.