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Finding the Fourth Proportional to 12,491.76, 18,752.04 and 8,568.48

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Solution

The fourth proportional to 12,491.76, 18,752.04 and 8,568.48 is: 12,862.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.76 : 18,752.04 = 8,568.48 : x
  2. Step 2: Convert to fraction form
    12,491.76/18,752.04 = 8,568.48/x
  3. Step 3: Cross multiply
    12,491.76x = 18,752.04 × 8,568.48
  4. Step 4: Simplify right side
    12,491.76x = 160,676,479.70
  5. Step 5: Solve for x
    x = 160,676,479.70/12,491.76
  6. Step 6: Final answer
    x = 12,862.60

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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.