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Finding the Fourth Proportional to 12,108, 18,149.04 and 5,086.26

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Solution

The fourth proportional to 12,108, 18,149.04 and 5,086.26 is: 7,623.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108 : 18,149.04 = 5,086.26 : x
  2. Step 2: Convert to fraction form
    12,108/18,149.04 = 5,086.26/x
  3. Step 3: Cross multiply
    12,108x = 18,149.04 × 5,086.26
  4. Step 4: Simplify right side
    12,108x = 92,310,736.19
  5. Step 5: Solve for x
    x = 92,310,736.19/12,108
  6. Step 6: Final answer
    x = 7,623.95

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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.