Home / 11,221.59-15,481.46-6,439.82

Finding the Fourth Proportional to 11,221.59, 15,481.46 and 6,439.82

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Solution

The fourth proportional to 11,221.59, 15,481.46 and 6,439.82 is: 8,884.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.59 : 15,481.46 = 6,439.82 : x
  2. Step 2: Convert to fraction form
    11,221.59/15,481.46 = 6,439.82/x
  3. Step 3: Cross multiply
    11,221.59x = 15,481.46 × 6,439.82
  4. Step 4: Simplify right side
    11,221.59x = 99,697,754.43
  5. Step 5: Solve for x
    x = 99,697,754.43/11,221.59
  6. Step 6: Final answer
    x = 8,884.46

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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.