Home / 11,221.73-16,836.23-5,378.75

Finding the Fourth Proportional to 11,221.73, 16,836.23 and 5,378.75

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Solution

The fourth proportional to 11,221.73, 16,836.23 and 5,378.75 is: 8,069.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.73 : 16,836.23 = 5,378.75 : x
  2. Step 2: Convert to fraction form
    11,221.73/16,836.23 = 5,378.75/x
  3. Step 3: Cross multiply
    11,221.73x = 16,836.23 × 5,378.75
  4. Step 4: Simplify right side
    11,221.73x = 90,557,872.11
  5. Step 5: Solve for x
    x = 90,557,872.11/11,221.73
  6. Step 6: Final answer
    x = 8,069.87

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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.