Home / 31,991.25-47,966.34-13,284.20

Finding the Fourth Proportional to 31,991.25, 47,966.34 and 13,284.20

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Solution

The fourth proportional to 31,991.25, 47,966.34 and 13,284.20 is: 19,917.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,991.25 : 47,966.34 = 13,284.20 : x
  2. Step 2: Convert to fraction form
    31,991.25/47,966.34 = 13,284.20/x
  3. Step 3: Cross multiply
    31,991.25x = 47,966.34 × 13,284.20
  4. Step 4: Simplify right side
    31,991.25x = 637,194,623.56
  5. Step 5: Solve for x
    x = 637,194,623.56/31,991.25
  6. Step 6: Final answer
    x = 19,917.78

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