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Finding the Fourth Proportional to 22,257.45, 30,713.72 and 12,185.71

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Solution

The fourth proportional to 22,257.45, 30,713.72 and 12,185.71 is: 16,815.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,257.45 : 30,713.72 = 12,185.71 : x
  2. Step 2: Convert to fraction form
    22,257.45/30,713.72 = 12,185.71/x
  3. Step 3: Cross multiply
    22,257.45x = 30,713.72 × 12,185.71
  4. Step 4: Simplify right side
    22,257.45x = 374,268,347.23
  5. Step 5: Solve for x
    x = 374,268,347.23/22,257.45
  6. Step 6: Final answer
    x = 16,815.42

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.