Home / 20,768.92-28,660.94-11,337.48

Finding the Fourth Proportional to 20,768.92, 28,660.94 and 11,337.48

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Solution

The fourth proportional to 20,768.92, 28,660.94 and 11,337.48 is: 15,645.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.92 : 28,660.94 = 11,337.48 : x
  2. Step 2: Convert to fraction form
    20,768.92/28,660.94 = 11,337.48/x
  3. Step 3: Cross multiply
    20,768.92x = 28,660.94 × 11,337.48
  4. Step 4: Simplify right side
    20,768.92x = 324,942,834.03
  5. Step 5: Solve for x
    x = 324,942,834.03/20,768.92
  6. Step 6: Final answer
    x = 15,645.63

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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.