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Finding the Fourth Proportional to 18,105.48, 27,118.08 and 13,914.64

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Solution

The fourth proportional to 18,105.48, 27,118.08 and 13,914.64 is: 20,841.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.48 : 27,118.08 = 13,914.64 : x
  2. Step 2: Convert to fraction form
    18,105.48/27,118.08 = 13,914.64/x
  3. Step 3: Cross multiply
    18,105.48x = 27,118.08 × 13,914.64
  4. Step 4: Simplify right side
    18,105.48x = 377,338,320.69
  5. Step 5: Solve for x
    x = 377,338,320.69/18,105.48
  6. Step 6: Final answer
    x = 20,841.11

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1.5x scale

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.