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Finding the Fourth Proportional to 12,571.35, 18,857.97 and 3,806.97

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Solution

The fourth proportional to 12,571.35, 18,857.97 and 3,806.97 is: 5,710.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.35 : 18,857.97 = 3,806.97 : x
  2. Step 2: Convert to fraction form
    12,571.35/18,857.97 = 3,806.97/x
  3. Step 3: Cross multiply
    12,571.35x = 18,857.97 × 3,806.97
  4. Step 4: Simplify right side
    12,571.35x = 71,791,726.05
  5. Step 5: Solve for x
    x = 71,791,726.05/12,571.35
  6. Step 6: Final answer
    x = 5,710.74

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