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Finding the Fourth Proportional to 11,295, 15,587.10 and 6,879

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Solution

The fourth proportional to 11,295, 15,587.10 and 6,879 is: 9,493.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,295 : 15,587.10 = 6,879 : x
  2. Step 2: Convert to fraction form
    11,295/15,587.10 = 6,879/x
  3. Step 3: Cross multiply
    11,295x = 15,587.10 × 6,879
  4. Step 4: Simplify right side
    11,295x = 107,223,660.90
  5. Step 5: Solve for x
    x = 107,223,660.90/11,295
  6. Step 6: Final answer
    x = 9,493.02

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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.