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Finding the Fourth Proportional to 8,766.29, 13,072.23 and 8,687.32

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Solution

The fourth proportional to 8,766.29, 13,072.23 and 8,687.32 is: 12,954.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,766.29 : 13,072.23 = 8,687.32 : x
  2. Step 2: Convert to fraction form
    8,766.29/13,072.23 = 8,687.32/x
  3. Step 3: Cross multiply
    8,766.29x = 13,072.23 × 8,687.32
  4. Step 4: Simplify right side
    8,766.29x = 113,562,612.44
  5. Step 5: Solve for x
    x = 113,562,612.44/8,766.29
  6. Step 6: Final answer
    x = 12,954.46

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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.