Home / 18,891.11-28,331.19-5,739.95

Finding the Fourth Proportional to 18,891.11, 28,331.19 and 5,739.95

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Solution

The fourth proportional to 18,891.11, 28,331.19 and 5,739.95 is: 8,608.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.11 : 28,331.19 = 5,739.95 : x
  2. Step 2: Convert to fraction form
    18,891.11/28,331.19 = 5,739.95/x
  3. Step 3: Cross multiply
    18,891.11x = 28,331.19 × 5,739.95
  4. Step 4: Simplify right side
    18,891.11x = 162,619,472.38
  5. Step 5: Solve for x
    x = 162,619,472.38/18,891.11
  6. Step 6: Final answer
    x = 8,608.26

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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.