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Finding the Fourth Proportional to 20,620.23, 30,946.74 and 7,476.36

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Solution

The fourth proportional to 20,620.23, 30,946.74 and 7,476.36 is: 11,220.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.23 : 30,946.74 = 7,476.36 : x
  2. Step 2: Convert to fraction form
    20,620.23/30,946.74 = 7,476.36/x
  3. Step 3: Cross multiply
    20,620.23x = 30,946.74 × 7,476.36
  4. Step 4: Simplify right side
    20,620.23x = 231,368,969.07
  5. Step 5: Solve for x
    x = 231,368,969.07/20,620.23
  6. Step 6: Final answer
    x = 11,220.48

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