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Finding the Fourth Proportional to 30,978, 46,447.92 and 18,495.60

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Solution

The fourth proportional to 30,978, 46,447.92 and 18,495.60 is: 27,732.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,978 : 46,447.92 = 18,495.60 : x
  2. Step 2: Convert to fraction form
    30,978/46,447.92 = 18,495.60/x
  3. Step 3: Cross multiply
    30,978x = 46,447.92 × 18,495.60
  4. Step 4: Simplify right side
    30,978x = 859,082,149.15
  5. Step 5: Solve for x
    x = 859,082,149.15/30,978
  6. Step 6: Final answer
    x = 27,732.01

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