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Finding the Fourth Proportional to 8,694.76, 13,076.70 and 8,172.52

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Solution

The fourth proportional to 8,694.76, 13,076.70 and 8,172.52 is: 12,291.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,694.76 : 13,076.70 = 8,172.52 : x
  2. Step 2: Convert to fraction form
    8,694.76/13,076.70 = 8,172.52/x
  3. Step 3: Cross multiply
    8,694.76x = 13,076.70 × 8,172.52
  4. Step 4: Simplify right side
    8,694.76x = 106,869,592.28
  5. Step 5: Solve for x
    x = 106,869,592.28/8,694.76
  6. Step 6: Final answer
    x = 12,291.26

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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.