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Finding the Fourth Proportional to 18,961.56, 28,442.16 and 6,481.44

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Solution

The fourth proportional to 18,961.56, 28,442.16 and 6,481.44 is: 9,722.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,961.56 : 28,442.16 = 6,481.44 : x
  2. Step 2: Convert to fraction form
    18,961.56/28,442.16 = 6,481.44/x
  3. Step 3: Cross multiply
    18,961.56x = 28,442.16 × 6,481.44
  4. Step 4: Simplify right side
    18,961.56x = 184,346,153.51
  5. Step 5: Solve for x
    x = 184,346,153.51/18,961.56
  6. Step 6: Final answer
    x = 9,722.10

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