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Finding the Fourth Proportional to 17,105.60, 25,658.40 and 11,200.80

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Solution

The fourth proportional to 17,105.60, 25,658.40 and 11,200.80 is: 16,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,105.60 : 25,658.40 = 11,200.80 : x
  2. Step 2: Convert to fraction form
    17,105.60/25,658.40 = 11,200.80/x
  3. Step 3: Cross multiply
    17,105.60x = 25,658.40 × 11,200.80
  4. Step 4: Simplify right side
    17,105.60x = 287,394,606.72
  5. Step 5: Solve for x
    x = 287,394,606.72/17,105.60
  6. Step 6: Final answer
    x = 16,801.20

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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.