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Finding the Fourth Proportional to 20,449.67, 30,680.99 and 7,301.75

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Solution

The fourth proportional to 20,449.67, 30,680.99 and 7,301.75 is: 10,954.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.67 : 30,680.99 = 7,301.75 : x
  2. Step 2: Convert to fraction form
    20,449.67/30,680.99 = 7,301.75/x
  3. Step 3: Cross multiply
    20,449.67x = 30,680.99 × 7,301.75
  4. Step 4: Simplify right side
    20,449.67x = 224,024,918.73
  5. Step 5: Solve for x
    x = 224,024,918.73/20,449.67
  6. Step 6: Final answer
    x = 10,954.94

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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.