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Finding the Fourth Proportional to 17,118.08, 25,665.60 and 8,787.68

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Solution

The fourth proportional to 17,118.08, 25,665.60 and 8,787.68 is: 13,175.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,118.08 : 25,665.60 = 8,787.68 : x
  2. Step 2: Convert to fraction form
    17,118.08/25,665.60 = 8,787.68/x
  3. Step 3: Cross multiply
    17,118.08x = 25,665.60 × 8,787.68
  4. Step 4: Simplify right side
    17,118.08x = 225,541,079.81
  5. Step 5: Solve for x
    x = 225,541,079.81/17,118.08
  6. Step 6: Final answer
    x = 13,175.61

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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.