Home / 13,177.68-18,183.96-8,920.08

Finding the Fourth Proportional to 13,177.68, 18,183.96 and 8,920.08

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Solution

The fourth proportional to 13,177.68, 18,183.96 and 8,920.08 is: 12,308.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,177.68 : 18,183.96 = 8,920.08 : x
  2. Step 2: Convert to fraction form
    13,177.68/18,183.96 = 8,920.08/x
  3. Step 3: Cross multiply
    13,177.68x = 18,183.96 × 8,920.08
  4. Step 4: Simplify right side
    13,177.68x = 162,202,377.92
  5. Step 5: Solve for x
    x = 162,202,377.92/13,177.68
  6. Step 6: Final answer
    x = 12,308.87

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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.