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Finding the Fourth Proportional to 10,169.56, 15,181.07 and 8,857

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Solution

The fourth proportional to 10,169.56, 15,181.07 and 8,857 is: 13,221.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,169.56 : 15,181.07 = 8,857 : x
  2. Step 2: Convert to fraction form
    10,169.56/15,181.07 = 8,857/x
  3. Step 3: Cross multiply
    10,169.56x = 15,181.07 × 8,857
  4. Step 4: Simplify right side
    10,169.56x = 134,458,736.99
  5. Step 5: Solve for x
    x = 134,458,736.99/10,169.56
  6. Step 6: Final answer
    x = 13,221.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.