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Finding the Fourth Proportional to 20,899.68, 28,840.56 and 11,468.04

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Solution

The fourth proportional to 20,899.68, 28,840.56 and 11,468.04 is: 15,825.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.68 : 28,840.56 = 11,468.04 : x
  2. Step 2: Convert to fraction form
    20,899.68/28,840.56 = 11,468.04/x
  3. Step 3: Cross multiply
    20,899.68x = 28,840.56 × 11,468.04
  4. Step 4: Simplify right side
    20,899.68x = 330,744,695.70
  5. Step 5: Solve for x
    x = 330,744,695.70/20,899.68
  6. Step 6: Final answer
    x = 15,825.35

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