Home / 18,131.25-27,198.09-4,984.95

Finding the Fourth Proportional to 18,131.25, 27,198.09 and 4,984.95

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Solution

The fourth proportional to 18,131.25, 27,198.09 and 4,984.95 is: 7,477.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,131.25 : 27,198.09 = 4,984.95 : x
  2. Step 2: Convert to fraction form
    18,131.25/27,198.09 = 4,984.95/x
  3. Step 3: Cross multiply
    18,131.25x = 27,198.09 × 4,984.95
  4. Step 4: Simplify right side
    18,131.25x = 135,581,118.75
  5. Step 5: Solve for x
    x = 135,581,118.75/18,131.25
  6. Step 6: Final answer
    x = 7,477.76

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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.