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Finding the Fourth Proportional to 27,950.70, 38,571.12 and 15,375.42

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Solution

The fourth proportional to 27,950.70, 38,571.12 and 15,375.42 is: 21,217.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,950.70 : 38,571.12 = 15,375.42 : x
  2. Step 2: Convert to fraction form
    27,950.70/38,571.12 = 15,375.42/x
  3. Step 3: Cross multiply
    27,950.70x = 38,571.12 × 15,375.42
  4. Step 4: Simplify right side
    27,950.70x = 593,047,169.87
  5. Step 5: Solve for x
    x = 593,047,169.87/27,950.70
  6. Step 6: Final answer
    x = 21,217.61

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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.