Home / 18,438.21-27,587.25-11,198.43

Finding the Fourth Proportional to 18,438.21, 27,587.25 and 11,198.43

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Solution

The fourth proportional to 18,438.21, 27,587.25 and 11,198.43 is: 16,755.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.21 : 27,587.25 = 11,198.43 : x
  2. Step 2: Convert to fraction form
    18,438.21/27,587.25 = 11,198.43/x
  3. Step 3: Cross multiply
    18,438.21x = 27,587.25 × 11,198.43
  4. Step 4: Simplify right side
    18,438.21x = 308,933,888.02
  5. Step 5: Solve for x
    x = 308,933,888.02/18,438.21
  6. Step 6: Final answer
    x = 16,755.09

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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.