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Finding the Fourth Proportional to 13,195.20, 19,771.20 and 11,251.20

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Solution

The fourth proportional to 13,195.20, 19,771.20 and 11,251.20 is: 16,858.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.20 : 19,771.20 = 11,251.20 : x
  2. Step 2: Convert to fraction form
    13,195.20/19,771.20 = 11,251.20/x
  3. Step 3: Cross multiply
    13,195.20x = 19,771.20 × 11,251.20
  4. Step 4: Simplify right side
    13,195.20x = 222,449,725.44
  5. Step 5: Solve for x
    x = 222,449,725.44/13,195.20
  6. Step 6: Final answer
    x = 16,858.38

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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.