Home / 12,873.28-19,309.92-8,285.44

Finding the Fourth Proportional to 12,873.28, 19,309.92 and 8,285.44

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Solution

The fourth proportional to 12,873.28, 19,309.92 and 8,285.44 is: 12,428.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,873.28 : 19,309.92 = 8,285.44 : x
  2. Step 2: Convert to fraction form
    12,873.28/19,309.92 = 8,285.44/x
  3. Step 3: Cross multiply
    12,873.28x = 19,309.92 × 8,285.44
  4. Step 4: Simplify right side
    12,873.28x = 159,991,183.56
  5. Step 5: Solve for x
    x = 159,991,183.56/12,873.28
  6. Step 6: Final answer
    x = 12,428.16

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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.