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Finding the Fourth Proportional to 13,179.96, 18,179.82 and 9,819.96

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Solution

The fourth proportional to 13,179.96, 18,179.82 and 9,819.96 is: 13,545.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.96 : 18,179.82 = 9,819.96 : x
  2. Step 2: Convert to fraction form
    13,179.96/18,179.82 = 9,819.96/x
  3. Step 3: Cross multiply
    13,179.96x = 18,179.82 × 9,819.96
  4. Step 4: Simplify right side
    13,179.96x = 178,525,105.21
  5. Step 5: Solve for x
    x = 178,525,105.21/13,179.96
  6. Step 6: Final answer
    x = 13,545.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.