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Finding the Fourth Proportional to 18,324.20, 27,480.90 and 7,227.20

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Solution

The fourth proportional to 18,324.20, 27,480.90 and 7,227.20 is: 10,838.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,324.20 : 27,480.90 = 7,227.20 : x
  2. Step 2: Convert to fraction form
    18,324.20/27,480.90 = 7,227.20/x
  3. Step 3: Cross multiply
    18,324.20x = 27,480.90 × 7,227.20
  4. Step 4: Simplify right side
    18,324.20x = 198,609,960.48
  5. Step 5: Solve for x
    x = 198,609,960.48/18,324.20
  6. Step 6: Final answer
    x = 10,838.67

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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.