Home / 11,972.62-17,939.13-6,121.18

Finding the Fourth Proportional to 11,972.62, 17,939.13 and 6,121.18

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Solution

The fourth proportional to 11,972.62, 17,939.13 and 6,121.18 is: 9,171.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,972.62 : 17,939.13 = 6,121.18 : x
  2. Step 2: Convert to fraction form
    11,972.62/17,939.13 = 6,121.18/x
  3. Step 3: Cross multiply
    11,972.62x = 17,939.13 × 6,121.18
  4. Step 4: Simplify right side
    11,972.62x = 109,808,643.77
  5. Step 5: Solve for x
    x = 109,808,643.77/11,972.62
  6. Step 6: Final answer
    x = 9,171.65

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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.