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Finding the Fourth Proportional to 20,978.85, 31,460.94 and 6,183.84

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Solution

The fourth proportional to 20,978.85, 31,460.94 and 6,183.84 is: 9,273.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,978.85 : 31,460.94 = 6,183.84 : x
  2. Step 2: Convert to fraction form
    20,978.85/31,460.94 = 6,183.84/x
  3. Step 3: Cross multiply
    20,978.85x = 31,460.94 × 6,183.84
  4. Step 4: Simplify right side
    20,978.85x = 194,549,419.21
  5. Step 5: Solve for x
    x = 194,549,419.21/20,978.85
  6. Step 6: Final answer
    x = 9,273.60

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Why These Related Problems?

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