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Finding the Fourth Proportional to 43,318, 65,002.92 and 18,694

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Solution

The fourth proportional to 43,318, 65,002.92 and 18,694 is: 28,052.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,318 : 65,002.92 = 18,694 : x
  2. Step 2: Convert to fraction form
    43,318/65,002.92 = 18,694/x
  3. Step 3: Cross multiply
    43,318x = 65,002.92 × 18,694
  4. Step 4: Simplify right side
    43,318x = 1,215,164,586.48
  5. Step 5: Solve for x
    x = 1,215,164,586.48/43,318
  6. Step 6: Final answer
    x = 28,052.19

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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.