Home / 13,863.45-20,805.21-5,545.79

Finding the Fourth Proportional to 13,863.45, 20,805.21 and 5,545.79

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Solution

The fourth proportional to 13,863.45, 20,805.21 and 5,545.79 is: 8,322.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,863.45 : 20,805.21 = 5,545.79 : x
  2. Step 2: Convert to fraction form
    13,863.45/20,805.21 = 5,545.79/x
  3. Step 3: Cross multiply
    13,863.45x = 20,805.21 × 5,545.79
  4. Step 4: Simplify right side
    13,863.45x = 115,381,221.54
  5. Step 5: Solve for x
    x = 115,381,221.54/13,863.45
  6. Step 6: Final answer
    x = 8,322.69

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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.