Home / 20,694.88-28,546.80-15,022.96

Finding the Fourth Proportional to 20,694.88, 28,546.80 and 15,022.96

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Solution

The fourth proportional to 20,694.88, 28,546.80 and 15,022.96 is: 20,722.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.88 : 28,546.80 = 15,022.96 : x
  2. Step 2: Convert to fraction form
    20,694.88/28,546.80 = 15,022.96/x
  3. Step 3: Cross multiply
    20,694.88x = 28,546.80 × 15,022.96
  4. Step 4: Simplify right side
    20,694.88x = 428,857,434.53
  5. Step 5: Solve for x
    x = 428,857,434.53/20,694.88
  6. Step 6: Final answer
    x = 20,722.88

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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.