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Finding the Fourth Proportional to 15,978.84, 23,979.06 and 5,590.68

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Solution

The fourth proportional to 15,978.84, 23,979.06 and 5,590.68 is: 8,389.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,978.84 : 23,979.06 = 5,590.68 : x
  2. Step 2: Convert to fraction form
    15,978.84/23,979.06 = 5,590.68/x
  3. Step 3: Cross multiply
    15,978.84x = 23,979.06 × 5,590.68
  4. Step 4: Simplify right side
    15,978.84x = 134,059,251.16
  5. Step 5: Solve for x
    x = 134,059,251.16/15,978.84
  6. Step 6: Final answer
    x = 8,389.80

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