Home / 20,850.82-28,771.97-11,896.61

Finding the Fourth Proportional to 20,850.82, 28,771.97 and 11,896.61

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Solution

The fourth proportional to 20,850.82, 28,771.97 and 11,896.61 is: 16,416.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.82 : 28,771.97 = 11,896.61 : x
  2. Step 2: Convert to fraction form
    20,850.82/28,771.97 = 11,896.61/x
  3. Step 3: Cross multiply
    20,850.82x = 28,771.97 × 11,896.61
  4. Step 4: Simplify right side
    20,850.82x = 342,288,702.68
  5. Step 5: Solve for x
    x = 342,288,702.68/20,850.82
  6. Step 6: Final answer
    x = 16,416.08

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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.