Home / 20,499.87-28,286.69-11,546.80

Finding the Fourth Proportional to 20,499.87, 28,286.69 and 11,546.80

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Solution

The fourth proportional to 20,499.87, 28,286.69 and 11,546.80 is: 15,932.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.87 : 28,286.69 = 11,546.80 : x
  2. Step 2: Convert to fraction form
    20,499.87/28,286.69 = 11,546.80/x
  3. Step 3: Cross multiply
    20,499.87x = 28,286.69 × 11,546.80
  4. Step 4: Simplify right side
    20,499.87x = 326,620,752.09
  5. Step 5: Solve for x
    x = 326,620,752.09/20,499.87
  6. Step 6: Final answer
    x = 15,932.82

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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.