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Finding the Fourth Proportional to 18,796.86, 28,197.69 and 6,311.52

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Solution

The fourth proportional to 18,796.86, 28,197.69 and 6,311.52 is: 9,468.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,796.86 : 28,197.69 = 6,311.52 : x
  2. Step 2: Convert to fraction form
    18,796.86/28,197.69 = 6,311.52/x
  3. Step 3: Cross multiply
    18,796.86x = 28,197.69 × 6,311.52
  4. Step 4: Simplify right side
    18,796.86x = 177,970,284.39
  5. Step 5: Solve for x
    x = 177,970,284.39/18,796.86
  6. Step 6: Final answer
    x = 9,468.09

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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.