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Finding the Fourth Proportional to 13,305.87, 18,363.81 and 11,063.89

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Solution

The fourth proportional to 13,305.87, 18,363.81 and 11,063.89 is: 15,269.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.87 : 18,363.81 = 11,063.89 : x
  2. Step 2: Convert to fraction form
    13,305.87/18,363.81 = 11,063.89/x
  3. Step 3: Cross multiply
    13,305.87x = 18,363.81 × 11,063.89
  4. Step 4: Simplify right side
    13,305.87x = 203,175,238.27
  5. Step 5: Solve for x
    x = 203,175,238.27/13,305.87
  6. Step 6: Final answer
    x = 15,269.59

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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.