Home / 13,190.92-19,786.38-3,959.08

Finding the Fourth Proportional to 13,190.92, 19,786.38 and 3,959.08

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Solution

The fourth proportional to 13,190.92, 19,786.38 and 3,959.08 is: 5,938.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.92 : 19,786.38 = 3,959.08 : x
  2. Step 2: Convert to fraction form
    13,190.92/19,786.38 = 3,959.08/x
  3. Step 3: Cross multiply
    13,190.92x = 19,786.38 × 3,959.08
  4. Step 4: Simplify right side
    13,190.92x = 78,335,861.33
  5. Step 5: Solve for x
    x = 78,335,861.33/13,190.92
  6. Step 6: Final answer
    x = 5,938.62

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Similar ratio
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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.