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Finding the Fourth Proportional to 20,299.44, 30,450.78 and 6,448.44

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Solution

The fourth proportional to 20,299.44, 30,450.78 and 6,448.44 is: 9,673.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.44 : 30,450.78 = 6,448.44 : x
  2. Step 2: Convert to fraction form
    20,299.44/30,450.78 = 6,448.44/x
  3. Step 3: Cross multiply
    20,299.44x = 30,450.78 × 6,448.44
  4. Step 4: Simplify right side
    20,299.44x = 196,360,027.78
  5. Step 5: Solve for x
    x = 196,360,027.78/20,299.44
  6. Step 6: Final answer
    x = 9,673.17

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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.