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Finding the Fourth Proportional to 17,142.60, 25,713.60 and 5,455.68

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Solution

The fourth proportional to 17,142.60, 25,713.60 and 5,455.68 is: 8,183.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,142.60 : 25,713.60 = 5,455.68 : x
  2. Step 2: Convert to fraction form
    17,142.60/25,713.60 = 5,455.68/x
  3. Step 3: Cross multiply
    17,142.60x = 25,713.60 × 5,455.68
  4. Step 4: Simplify right side
    17,142.60x = 140,285,173.25
  5. Step 5: Solve for x
    x = 140,285,173.25/17,142.60
  6. Step 6: Final answer
    x = 8,183.42

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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.