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Finding the Fourth Proportional to 26,686.53, 39,974.42 and 15,559.47

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Solution

The fourth proportional to 26,686.53, 39,974.42 and 15,559.47 is: 23,306.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,686.53 : 39,974.42 = 15,559.47 : x
  2. Step 2: Convert to fraction form
    26,686.53/39,974.42 = 15,559.47/x
  3. Step 3: Cross multiply
    26,686.53x = 39,974.42 × 15,559.47
  4. Step 4: Simplify right side
    26,686.53x = 621,980,710.96
  5. Step 5: Solve for x
    x = 621,980,710.96/26,686.53
  6. Step 6: Final answer
    x = 23,306.92

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