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Finding the Fourth Proportional to 18,694.54, 25,745.97 and 18,286.30

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Solution

The fourth proportional to 18,694.54, 25,745.97 and 18,286.30 is: 25,183.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.54 : 25,745.97 = 18,286.30 : x
  2. Step 2: Convert to fraction form
    18,694.54/25,745.97 = 18,286.30/x
  3. Step 3: Cross multiply
    18,694.54x = 25,745.97 × 18,286.30
  4. Step 4: Simplify right side
    18,694.54x = 470,798,466.85
  5. Step 5: Solve for x
    x = 470,798,466.85/18,694.54
  6. Step 6: Final answer
    x = 25,183.75

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1.5x scale

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.