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Finding the Fourth Proportional to 12,195.92, 18,305.22 and 4,805.48

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Solution

The fourth proportional to 12,195.92, 18,305.22 and 4,805.48 is: 7,212.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.92 : 18,305.22 = 4,805.48 : x
  2. Step 2: Convert to fraction form
    12,195.92/18,305.22 = 4,805.48/x
  3. Step 3: Cross multiply
    12,195.92x = 18,305.22 × 4,805.48
  4. Step 4: Simplify right side
    12,195.92x = 87,965,277.08
  5. Step 5: Solve for x
    x = 87,965,277.08/12,195.92
  6. Step 6: Final answer
    x = 7,212.68

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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.