Home / 13,921.26-20,854.07-8,371.56

Finding the Fourth Proportional to 13,921.26, 20,854.07 and 8,371.56

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Solution

The fourth proportional to 13,921.26, 20,854.07 and 8,371.56 is: 12,540.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.26 : 20,854.07 = 8,371.56 : x
  2. Step 2: Convert to fraction form
    13,921.26/20,854.07 = 8,371.56/x
  3. Step 3: Cross multiply
    13,921.26x = 20,854.07 × 8,371.56
  4. Step 4: Simplify right side
    13,921.26x = 174,581,056.39
  5. Step 5: Solve for x
    x = 174,581,056.39/13,921.26
  6. Step 6: Final answer
    x = 12,540.61

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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.