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Finding the Fourth Proportional to 11,993.47, 17,990.20 and 3,229.27

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Solution

The fourth proportional to 11,993.47, 17,990.20 and 3,229.27 is: 4,843.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,993.47 : 17,990.20 = 3,229.27 : x
  2. Step 2: Convert to fraction form
    11,993.47/17,990.20 = 3,229.27/x
  3. Step 3: Cross multiply
    11,993.47x = 17,990.20 × 3,229.27
  4. Step 4: Simplify right side
    11,993.47x = 58,095,172.22
  5. Step 5: Solve for x
    x = 58,095,172.22/11,993.47
  6. Step 6: Final answer
    x = 4,843.90

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Similar ratio
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1.5x scale

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.