Home / 11,921.20-16,447.45-6,884.75

Finding the Fourth Proportional to 11,921.20, 16,447.45 and 6,884.75

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Solution

The fourth proportional to 11,921.20, 16,447.45 and 6,884.75 is: 9,498.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921.20 : 16,447.45 = 6,884.75 : x
  2. Step 2: Convert to fraction form
    11,921.20/16,447.45 = 6,884.75/x
  3. Step 3: Cross multiply
    11,921.20x = 16,447.45 × 6,884.75
  4. Step 4: Simplify right side
    11,921.20x = 113,236,546.96
  5. Step 5: Solve for x
    x = 113,236,546.96/11,921.20
  6. Step 6: Final answer
    x = 9,498.76

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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.