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Finding the Fourth Proportional to 20,299.50, 30,454.11 and 6,448.50

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Solution

The fourth proportional to 20,299.50, 30,454.11 and 6,448.50 is: 9,674.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.50 : 30,454.11 = 6,448.50 : x
  2. Step 2: Convert to fraction form
    20,299.50/30,454.11 = 6,448.50/x
  3. Step 3: Cross multiply
    20,299.50x = 30,454.11 × 6,448.50
  4. Step 4: Simplify right side
    20,299.50x = 196,383,328.34
  5. Step 5: Solve for x
    x = 196,383,328.34/20,299.50
  6. Step 6: Final answer
    x = 9,674.29

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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.