Home / 21,186.41-31,789.98-8,535.64

Finding the Fourth Proportional to 21,186.41, 31,789.98 and 8,535.64

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Solution

The fourth proportional to 21,186.41, 31,789.98 and 8,535.64 is: 12,807.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.41 : 31,789.98 = 8,535.64 : x
  2. Step 2: Convert to fraction form
    21,186.41/31,789.98 = 8,535.64/x
  3. Step 3: Cross multiply
    21,186.41x = 31,789.98 × 8,535.64
  4. Step 4: Simplify right side
    21,186.41x = 271,347,745.41
  5. Step 5: Solve for x
    x = 271,347,745.41/21,186.41
  6. Step 6: Final answer
    x = 12,807.63

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