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Finding the Fourth Proportional to 18,892, 28,338.60 and 5,744.49

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Solution

The fourth proportional to 18,892, 28,338.60 and 5,744.49 is: 8,616.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892 : 28,338.60 = 5,744.49 : x
  2. Step 2: Convert to fraction form
    18,892/28,338.60 = 5,744.49/x
  3. Step 3: Cross multiply
    18,892x = 28,338.60 × 5,744.49
  4. Step 4: Simplify right side
    18,892x = 162,790,662.62
  5. Step 5: Solve for x
    x = 162,790,662.62/18,892
  6. Step 6: Final answer
    x = 8,616.91

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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.