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Finding the Fourth Proportional to 18,572.27, 27,860.27 and 5,424.75

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Solution

The fourth proportional to 18,572.27, 27,860.27 and 5,424.75 is: 8,137.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.27 : 27,860.27 = 5,424.75 : x
  2. Step 2: Convert to fraction form
    18,572.27/27,860.27 = 5,424.75/x
  3. Step 3: Cross multiply
    18,572.27x = 27,860.27 × 5,424.75
  4. Step 4: Simplify right side
    18,572.27x = 151,134,972.56
  5. Step 5: Solve for x
    x = 151,134,972.56/18,572.27
  6. Step 6: Final answer
    x = 8,137.67

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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.