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Finding the Fourth Proportional to 31,008.98, 42,792.93 and 16,861.91

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Solution

The fourth proportional to 31,008.98, 42,792.93 and 16,861.91 is: 23,269.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,008.98 : 42,792.93 = 16,861.91 : x
  2. Step 2: Convert to fraction form
    31,008.98/42,792.93 = 16,861.91/x
  3. Step 3: Cross multiply
    31,008.98x = 42,792.93 × 16,861.91
  4. Step 4: Simplify right side
    31,008.98x = 721,570,534.30
  5. Step 5: Solve for x
    x = 721,570,534.30/31,008.98
  6. Step 6: Final answer
    x = 23,269.73

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