Home / 11,725.20-16,180.28-6,419.92

Finding the Fourth Proportional to 11,725.20, 16,180.28 and 6,419.92

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Solution

The fourth proportional to 11,725.20, 16,180.28 and 6,419.92 is: 8,859.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,725.20 : 16,180.28 = 6,419.92 : x
  2. Step 2: Convert to fraction form
    11,725.20/16,180.28 = 6,419.92/x
  3. Step 3: Cross multiply
    11,725.20x = 16,180.28 × 6,419.92
  4. Step 4: Simplify right side
    11,725.20x = 103,876,103.18
  5. Step 5: Solve for x
    x = 103,876,103.18/11,725.20
  6. Step 6: Final answer
    x = 8,859.22

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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.