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Finding the Fourth Proportional to 10,992.89, 16,489.34 and 5,453.10

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Solution

The fourth proportional to 10,992.89, 16,489.34 and 5,453.10 is: 8,179.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,992.89 : 16,489.34 = 5,453.10 : x
  2. Step 2: Convert to fraction form
    10,992.89/16,489.34 = 5,453.10/x
  3. Step 3: Cross multiply
    10,992.89x = 16,489.34 × 5,453.10
  4. Step 4: Simplify right side
    10,992.89x = 89,918,019.95
  5. Step 5: Solve for x
    x = 89,918,019.95/10,992.89
  6. Step 6: Final answer
    x = 8,179.65

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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.