Home / 20,768.87-28,661.34-11,337.23

Finding the Fourth Proportional to 20,768.87, 28,661.34 and 11,337.23

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Solution

The fourth proportional to 20,768.87, 28,661.34 and 11,337.23 is: 15,645.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.87 : 28,661.34 = 11,337.23 : x
  2. Step 2: Convert to fraction form
    20,768.87/28,661.34 = 11,337.23/x
  3. Step 3: Cross multiply
    20,768.87x = 28,661.34 × 11,337.23
  4. Step 4: Simplify right side
    20,768.87x = 324,940,060.38
  5. Step 5: Solve for x
    x = 324,940,060.38/20,768.87
  6. Step 6: Final answer
    x = 15,645.54

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Double scale
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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.