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Finding the Fourth Proportional to 21,074.61, 31,611.92 and 6,293.91

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Solution

The fourth proportional to 21,074.61, 31,611.92 and 6,293.91 is: 9,440.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.61 : 31,611.92 = 6,293.91 : x
  2. Step 2: Convert to fraction form
    21,074.61/31,611.92 = 6,293.91/x
  3. Step 3: Cross multiply
    21,074.61x = 31,611.92 × 6,293.91
  4. Step 4: Simplify right side
    21,074.61x = 198,962,579.41
  5. Step 5: Solve for x
    x = 198,962,579.41/21,074.61
  6. Step 6: Final answer
    x = 9,440.87

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