Home / 19,891.11-29,836.68-11,121.24

Finding the Fourth Proportional to 19,891.11, 29,836.68 and 11,121.24

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Solution

The fourth proportional to 19,891.11, 29,836.68 and 11,121.24 is: 16,681.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,891.11 : 29,836.68 = 11,121.24 : x
  2. Step 2: Convert to fraction form
    19,891.11/29,836.68 = 11,121.24/x
  3. Step 3: Cross multiply
    19,891.11x = 29,836.68 × 11,121.24
  4. Step 4: Simplify right side
    19,891.11x = 331,820,879.08
  5. Step 5: Solve for x
    x = 331,820,879.08/19,891.11
  6. Step 6: Final answer
    x = 16,681.87

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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.