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Finding the Fourth Proportional to 20,866.22, 31,300.47 and 5,283.98

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Solution

The fourth proportional to 20,866.22, 31,300.47 and 5,283.98 is: 7,926.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.22 : 31,300.47 = 5,283.98 : x
  2. Step 2: Convert to fraction form
    20,866.22/31,300.47 = 5,283.98/x
  3. Step 3: Cross multiply
    20,866.22x = 31,300.47 × 5,283.98
  4. Step 4: Simplify right side
    20,866.22x = 165,391,057.47
  5. Step 5: Solve for x
    x = 165,391,057.47/20,866.22
  6. Step 6: Final answer
    x = 7,926.26

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