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Finding the Fourth Proportional to 19,912.10, 29,847.49 and 9,910.22

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Solution

The fourth proportional to 19,912.10, 29,847.49 and 9,910.22 is: 14,855.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,912.10 : 29,847.49 = 9,910.22 : x
  2. Step 2: Convert to fraction form
    19,912.10/29,847.49 = 9,910.22/x
  3. Step 3: Cross multiply
    19,912.10x = 29,847.49 × 9,910.22
  4. Step 4: Simplify right side
    19,912.10x = 295,794,993.56
  5. Step 5: Solve for x
    x = 295,794,993.56/19,912.10
  6. Step 6: Final answer
    x = 14,855.04

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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.