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Finding the Fourth Proportional to 18,796.24, 28,198.24 and 7,109.28

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Solution

The fourth proportional to 18,796.24, 28,198.24 and 7,109.28 is: 10,665.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.24 : 28,198.24 = 7,109.28 : x
  2. Step 2: Convert to fraction form
    18,796.24/28,198.24 = 7,109.28/x
  3. Step 3: Cross multiply
    18,796.24x = 28,198.24 × 7,109.28
  4. Step 4: Simplify right side
    18,796.24x = 200,469,183.67
  5. Step 5: Solve for x
    x = 200,469,183.67/18,796.24
  6. Step 6: Final answer
    x = 10,665.39

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1.5x scale

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.