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Finding the Fourth Proportional to 28,806.92, 43,218.22 and 8,815.97

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Solution

The fourth proportional to 28,806.92, 43,218.22 and 8,815.97 is: 13,226.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,806.92 : 43,218.22 = 8,815.97 : x
  2. Step 2: Convert to fraction form
    28,806.92/43,218.22 = 8,815.97/x
  3. Step 3: Cross multiply
    28,806.92x = 43,218.22 × 8,815.97
  4. Step 4: Simplify right side
    28,806.92x = 381,010,530.97
  5. Step 5: Solve for x
    x = 381,010,530.97/28,806.92
  6. Step 6: Final answer
    x = 13,226.35

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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.