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Finding the Fourth Proportional to 8,664.55, 13,000.03 and 8,344.55

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Solution

The fourth proportional to 8,664.55, 13,000.03 and 8,344.55 is: 12,519.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,664.55 : 13,000.03 = 8,344.55 : x
  2. Step 2: Convert to fraction form
    8,664.55/13,000.03 = 8,344.55/x
  3. Step 3: Cross multiply
    8,664.55x = 13,000.03 × 8,344.55
  4. Step 4: Simplify right side
    8,664.55x = 108,479,358.61
  5. Step 5: Solve for x
    x = 108,479,358.61/8,664.55
  6. Step 6: Final answer
    x = 12,519.91

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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.