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Finding the Fourth Proportional to 18,396.87, 25,396.66 and 12,344.93

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Solution

The fourth proportional to 18,396.87, 25,396.66 and 12,344.93 is: 17,042.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,396.87 : 25,396.66 = 12,344.93 : x
  2. Step 2: Convert to fraction form
    18,396.87/25,396.66 = 12,344.93/x
  3. Step 3: Cross multiply
    18,396.87x = 25,396.66 × 12,344.93
  4. Step 4: Simplify right side
    18,396.87x = 313,519,989.93
  5. Step 5: Solve for x
    x = 313,519,989.93/18,396.87
  6. Step 6: Final answer
    x = 17,042.03

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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.