Home / 20,956.24-28,919.04-11,524.80

Finding the Fourth Proportional to 20,956.24, 28,919.04 and 11,524.80

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Solution

The fourth proportional to 20,956.24, 28,919.04 and 11,524.80 is: 15,903.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.24 : 28,919.04 = 11,524.80 : x
  2. Step 2: Convert to fraction form
    20,956.24/28,919.04 = 11,524.80/x
  3. Step 3: Cross multiply
    20,956.24x = 28,919.04 × 11,524.80
  4. Step 4: Simplify right side
    20,956.24x = 333,286,217.42
  5. Step 5: Solve for x
    x = 333,286,217.42/20,956.24
  6. Step 6: Final answer
    x = 15,903.91

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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.