Home / 19,904.86-27,479.28-15,418.54

Finding the Fourth Proportional to 19,904.86, 27,479.28 and 15,418.54

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Solution

The fourth proportional to 19,904.86, 27,479.28 and 15,418.54 is: 21,285.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,904.86 : 27,479.28 = 15,418.54 : x
  2. Step 2: Convert to fraction form
    19,904.86/27,479.28 = 15,418.54/x
  3. Step 3: Cross multiply
    19,904.86x = 27,479.28 × 15,418.54
  4. Step 4: Simplify right side
    19,904.86x = 423,690,377.85
  5. Step 5: Solve for x
    x = 423,690,377.85/19,904.86
  6. Step 6: Final answer
    x = 21,285.78

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