Home / 18,891.38-28,338.66-5,743.87

Finding the Fourth Proportional to 18,891.38, 28,338.66 and 5,743.87

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Solution

The fourth proportional to 18,891.38, 28,338.66 and 5,743.87 is: 8,616.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.38 : 28,338.66 = 5,743.87 : x
  2. Step 2: Convert to fraction form
    18,891.38/28,338.66 = 5,743.87/x
  3. Step 3: Cross multiply
    18,891.38x = 28,338.66 × 5,743.87
  4. Step 4: Simplify right side
    18,891.38x = 162,773,579.01
  5. Step 5: Solve for x
    x = 162,773,579.01/18,891.38
  6. Step 6: Final answer
    x = 8,616.29

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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.