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Finding the Fourth Proportional to 18,863.94, 28,292.76 and 5,713.18

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Solution

The fourth proportional to 18,863.94, 28,292.76 and 5,713.18 is: 8,568.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,863.94 : 28,292.76 = 5,713.18 : x
  2. Step 2: Convert to fraction form
    18,863.94/28,292.76 = 5,713.18/x
  3. Step 3: Cross multiply
    18,863.94x = 28,292.76 × 5,713.18
  4. Step 4: Simplify right side
    18,863.94x = 161,641,687.37
  5. Step 5: Solve for x
    x = 161,641,687.37/18,863.94
  6. Step 6: Final answer
    x = 8,568.82

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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.