Home / 20,286.87-27,993.83-11,672.84

Finding the Fourth Proportional to 20,286.87, 27,993.83 and 11,672.84

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Solution

The fourth proportional to 20,286.87, 27,993.83 and 11,672.84 is: 16,107.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.87 : 27,993.83 = 11,672.84 : x
  2. Step 2: Convert to fraction form
    20,286.87/27,993.83 = 11,672.84/x
  3. Step 3: Cross multiply
    20,286.87x = 27,993.83 × 11,672.84
  4. Step 4: Simplify right side
    20,286.87x = 326,767,300.24
  5. Step 5: Solve for x
    x = 326,767,300.24/20,286.87
  6. Step 6: Final answer
    x = 16,107.33

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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.