Home / 18,221.37-27,270.33-11,205.83

Finding the Fourth Proportional to 18,221.37, 27,270.33 and 11,205.83

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Solution

The fourth proportional to 18,221.37, 27,270.33 and 11,205.83 is: 16,770.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,221.37 : 27,270.33 = 11,205.83 : x
  2. Step 2: Convert to fraction form
    18,221.37/27,270.33 = 11,205.83/x
  3. Step 3: Cross multiply
    18,221.37x = 27,270.33 × 11,205.83
  4. Step 4: Simplify right side
    18,221.37x = 305,586,545.67
  5. Step 5: Solve for x
    x = 305,586,545.67/18,221.37
  6. Step 6: Final answer
    x = 16,770.78

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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.