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Finding the Fourth Proportional to 13,363.38, 18,439.25 and 8,584.38

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Solution

The fourth proportional to 13,363.38, 18,439.25 and 8,584.38 is: 11,845.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,363.38 : 18,439.25 = 8,584.38 : x
  2. Step 2: Convert to fraction form
    13,363.38/18,439.25 = 8,584.38/x
  3. Step 3: Cross multiply
    13,363.38x = 18,439.25 × 8,584.38
  4. Step 4: Simplify right side
    13,363.38x = 158,289,485.99
  5. Step 5: Solve for x
    x = 158,289,485.99/13,363.38
  6. Step 6: Final answer
    x = 11,845.02

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Why These Related Problems?

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