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Finding the Fourth Proportional to 18,063.87, 27,109.85 and 11,822.15

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Solution

The fourth proportional to 18,063.87, 27,109.85 and 11,822.15 is: 17,742.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,063.87 : 27,109.85 = 11,822.15 : x
  2. Step 2: Convert to fraction form
    18,063.87/27,109.85 = 11,822.15/x
  3. Step 3: Cross multiply
    18,063.87x = 27,109.85 × 11,822.15
  4. Step 4: Simplify right side
    18,063.87x = 320,496,518.52
  5. Step 5: Solve for x
    x = 320,496,518.52/18,063.87
  6. Step 6: Final answer
    x = 17,742.41

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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.