Home / 11,511.28-15,884.40-6,474.70

Finding the Fourth Proportional to 11,511.28, 15,884.40 and 6,474.70

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Solution

The fourth proportional to 11,511.28, 15,884.40 and 6,474.70 is: 8,934.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,511.28 : 15,884.40 = 6,474.70 : x
  2. Step 2: Convert to fraction form
    11,511.28/15,884.40 = 6,474.70/x
  3. Step 3: Cross multiply
    11,511.28x = 15,884.40 × 6,474.70
  4. Step 4: Simplify right side
    11,511.28x = 102,846,724.68
  5. Step 5: Solve for x
    x = 102,846,724.68/11,511.28
  6. Step 6: Final answer
    x = 8,934.43

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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.