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Finding the Fourth Proportional to 12,674.43, 18,998.91 and 5,283

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Solution

The fourth proportional to 12,674.43, 18,998.91 and 5,283 is: 7,919.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,674.43 : 18,998.91 = 5,283 : x
  2. Step 2: Convert to fraction form
    12,674.43/18,998.91 = 5,283/x
  3. Step 3: Cross multiply
    12,674.43x = 18,998.91 × 5,283
  4. Step 4: Simplify right side
    12,674.43x = 100,371,241.53
  5. Step 5: Solve for x
    x = 100,371,241.53/12,674.43
  6. Step 6: Final answer
    x = 7,919.19

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Why These Related Problems?

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