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Finding the Fourth Proportional to 11,105.39, 16,658.08 and 5,553.15

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Solution

The fourth proportional to 11,105.39, 16,658.08 and 5,553.15 is: 8,329.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.39 : 16,658.08 = 5,553.15 : x
  2. Step 2: Convert to fraction form
    11,105.39/16,658.08 = 5,553.15/x
  3. Step 3: Cross multiply
    11,105.39x = 16,658.08 × 5,553.15
  4. Step 4: Simplify right side
    11,105.39x = 92,504,816.95
  5. Step 5: Solve for x
    x = 92,504,816.95/11,105.39
  6. Step 6: Final answer
    x = 8,329.72

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Half scale
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Double scale
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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.