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Finding the Fourth Proportional to 15,731.07, 21,708.95 and 9,017.09

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Solution

The fourth proportional to 15,731.07, 21,708.95 and 9,017.09 is: 12,443.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,731.07 : 21,708.95 = 9,017.09 : x
  2. Step 2: Convert to fraction form
    15,731.07/21,708.95 = 9,017.09/x
  3. Step 3: Cross multiply
    15,731.07x = 21,708.95 × 9,017.09
  4. Step 4: Simplify right side
    15,731.07x = 195,751,402.33
  5. Step 5: Solve for x
    x = 195,751,402.33/15,731.07
  6. Step 6: Final answer
    x = 12,443.62

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