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Finding the Fourth Proportional to 18,571.84, 27,850.78 and 7,474.76

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Solution

The fourth proportional to 18,571.84, 27,850.78 and 7,474.76 is: 11,209.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,571.84 : 27,850.78 = 7,474.76 : x
  2. Step 2: Convert to fraction form
    18,571.84/27,850.78 = 7,474.76/x
  3. Step 3: Cross multiply
    18,571.84x = 27,850.78 × 7,474.76
  4. Step 4: Simplify right side
    18,571.84x = 208,177,896.31
  5. Step 5: Solve for x
    x = 208,177,896.31/18,571.84
  6. Step 6: Final answer
    x = 11,209.33

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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.