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Finding the Fourth Proportional to 11,969.20, 17,950.02 and 11,079.82

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Solution

The fourth proportional to 11,969.20, 17,950.02 and 11,079.82 is: 16,616.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,969.20 : 17,950.02 = 11,079.82 : x
  2. Step 2: Convert to fraction form
    11,969.20/17,950.02 = 11,079.82/x
  3. Step 3: Cross multiply
    11,969.20x = 17,950.02 × 11,079.82
  4. Step 4: Simplify right side
    11,969.20x = 198,882,990.60
  5. Step 5: Solve for x
    x = 198,882,990.60/11,969.20
  6. Step 6: Final answer
    x = 16,616.23

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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.