Home / 12,722.20-19,085.10-3,956.20

Finding the Fourth Proportional to 12,722.20, 19,085.10 and 3,956.20

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Solution

The fourth proportional to 12,722.20, 19,085.10 and 3,956.20 is: 5,934.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,722.20 : 19,085.10 = 3,956.20 : x
  2. Step 2: Convert to fraction form
    12,722.20/19,085.10 = 3,956.20/x
  3. Step 3: Cross multiply
    12,722.20x = 19,085.10 × 3,956.20
  4. Step 4: Simplify right side
    12,722.20x = 75,504,472.62
  5. Step 5: Solve for x
    x = 75,504,472.62/12,722.20
  6. Step 6: Final answer
    x = 5,934.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.