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Finding the Fourth Proportional to 20,468, 28,245.84 and 11,636

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Solution

The fourth proportional to 20,468, 28,245.84 and 11,636 is: 16,057.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468 : 28,245.84 = 11,636 : x
  2. Step 2: Convert to fraction form
    20,468/28,245.84 = 11,636/x
  3. Step 3: Cross multiply
    20,468x = 28,245.84 × 11,636
  4. Step 4: Simplify right side
    20,468x = 328,668,594.24
  5. Step 5: Solve for x
    x = 328,668,594.24/20,468
  6. Step 6: Final answer
    x = 16,057.68

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