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Finding the Fourth Proportional to 11,213.10, 16,819.65 and 7,757.10

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Solution

The fourth proportional to 11,213.10, 16,819.65 and 7,757.10 is: 11,635.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,213.10 : 16,819.65 = 7,757.10 : x
  2. Step 2: Convert to fraction form
    11,213.10/16,819.65 = 7,757.10/x
  3. Step 3: Cross multiply
    11,213.10x = 16,819.65 × 7,757.10
  4. Step 4: Simplify right side
    11,213.10x = 130,471,707.02
  5. Step 5: Solve for x
    x = 130,471,707.02/11,213.10
  6. Step 6: Final answer
    x = 11,635.65

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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.