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Finding the Fourth Proportional to 11,443.80, 17,165.70 and 7,944.60

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Solution

The fourth proportional to 11,443.80, 17,165.70 and 7,944.60 is: 11,916.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,443.80 : 17,165.70 = 7,944.60 : x
  2. Step 2: Convert to fraction form
    11,443.80/17,165.70 = 7,944.60/x
  3. Step 3: Cross multiply
    11,443.80x = 17,165.70 × 7,944.60
  4. Step 4: Simplify right side
    11,443.80x = 136,374,620.22
  5. Step 5: Solve for x
    x = 136,374,620.22/11,443.80
  6. Step 6: Final answer
    x = 11,916.90

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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.