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Finding the Fourth Proportional to 21,978,047.20, 32,904,085.20 and 21,348,191.20

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Solution

The fourth proportional to 21,978,047.20, 32,904,085.20 and 21,348,191.20 is: 31,961,106.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,978,047.20 : 32,904,085.20 = 21,348,191.20 : x
  2. Step 2: Convert to fraction form
    21,978,047.20/32,904,085.20 = 21,348,191.20/x
  3. Step 3: Cross multiply
    21,978,047.20x = 32,904,085.20 × 21,348,191.20
  4. Step 4: Simplify right side
    21,978,047.20x = 702,442,702,110,690.25
  5. Step 5: Solve for x
    x = 702,442,702,110,690.25/21,978,047.20
  6. Step 6: Final answer
    x = 31,961,106.27

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