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Finding the Fourth Proportional to 10,859.52, 14,986.88 and 6,143.80

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Solution

The fourth proportional to 10,859.52, 14,986.88 and 6,143.80 is: 8,478.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,859.52 : 14,986.88 = 6,143.80 : x
  2. Step 2: Convert to fraction form
    10,859.52/14,986.88 = 6,143.80/x
  3. Step 3: Cross multiply
    10,859.52x = 14,986.88 × 6,143.80
  4. Step 4: Simplify right side
    10,859.52x = 92,076,393.34
  5. Step 5: Solve for x
    x = 92,076,393.34/10,859.52
  6. Step 6: Final answer
    x = 8,478.86

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