Home / 18,115.82-24,989.24-11,390.80

Finding the Fourth Proportional to 18,115.82, 24,989.24 and 11,390.80

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Solution

The fourth proportional to 18,115.82, 24,989.24 and 11,390.80 is: 15,712.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.82 : 24,989.24 = 11,390.80 : x
  2. Step 2: Convert to fraction form
    18,115.82/24,989.24 = 11,390.80/x
  3. Step 3: Cross multiply
    18,115.82x = 24,989.24 × 11,390.80
  4. Step 4: Simplify right side
    18,115.82x = 284,647,434.99
  5. Step 5: Solve for x
    x = 284,647,434.99/18,115.82
  6. Step 6: Final answer
    x = 15,712.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.