Home / 20,786.67-28,678.44-11,831.89

Finding the Fourth Proportional to 20,786.67, 28,678.44 and 11,831.89

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Solution

The fourth proportional to 20,786.67, 28,678.44 and 11,831.89 is: 16,323.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,786.67 : 28,678.44 = 11,831.89 : x
  2. Step 2: Convert to fraction form
    20,786.67/28,678.44 = 11,831.89/x
  3. Step 3: Cross multiply
    20,786.67x = 28,678.44 × 11,831.89
  4. Step 4: Simplify right side
    20,786.67x = 339,320,147.45
  5. Step 5: Solve for x
    x = 339,320,147.45/20,786.67
  6. Step 6: Final answer
    x = 16,323.93

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