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Finding the Fourth Proportional to 18,523.05, 27,788.91 and 5,375.67

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Solution

The fourth proportional to 18,523.05, 27,788.91 and 5,375.67 is: 8,064.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,523.05 : 27,788.91 = 5,375.67 : x
  2. Step 2: Convert to fraction form
    18,523.05/27,788.91 = 5,375.67/x
  3. Step 3: Cross multiply
    18,523.05x = 27,788.91 × 5,375.67
  4. Step 4: Simplify right side
    18,523.05x = 149,384,009.82
  5. Step 5: Solve for x
    x = 149,384,009.82/18,523.05
  6. Step 6: Final answer
    x = 8,064.76

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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.