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Finding the Fourth Proportional to 19,493.92, 29,245.20 and 9,100

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Solution

The fourth proportional to 19,493.92, 29,245.20 and 9,100 is: 13,652.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,493.92 : 29,245.20 = 9,100 : x
  2. Step 2: Convert to fraction form
    19,493.92/29,245.20 = 9,100/x
  3. Step 3: Cross multiply
    19,493.92x = 29,245.20 × 9,100
  4. Step 4: Simplify right side
    19,493.92x = 266,131,320
  5. Step 5: Solve for x
    x = 266,131,320/19,493.92
  6. Step 6: Final answer
    x = 13,652.02

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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.