Home / 11,623.20-17,434.56-2,857.78

Finding the Fourth Proportional to 11,623.20, 17,434.56 and 2,857.78

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Solution

The fourth proportional to 11,623.20, 17,434.56 and 2,857.78 is: 4,286.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,623.20 : 17,434.56 = 2,857.78 : x
  2. Step 2: Convert to fraction form
    11,623.20/17,434.56 = 2,857.78/x
  3. Step 3: Cross multiply
    11,623.20x = 17,434.56 × 2,857.78
  4. Step 4: Simplify right side
    11,623.20x = 49,824,136.88
  5. Step 5: Solve for x
    x = 49,824,136.88/11,623.20
  6. Step 6: Final answer
    x = 4,286.61

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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.