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Finding the Fourth Proportional to 12,158.62, 18,218.48 and 10,992.22

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Solution

The fourth proportional to 12,158.62, 18,218.48 and 10,992.22 is: 16,470.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158.62 : 18,218.48 = 10,992.22 : x
  2. Step 2: Convert to fraction form
    12,158.62/18,218.48 = 10,992.22/x
  3. Step 3: Cross multiply
    12,158.62x = 18,218.48 × 10,992.22
  4. Step 4: Simplify right side
    12,158.62x = 200,261,540.23
  5. Step 5: Solve for x
    x = 200,261,540.23/12,158.62
  6. Step 6: Final answer
    x = 16,470.75

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1.5x scale

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.