Home / 38,815.72-58,221.54-12,520.47

Finding the Fourth Proportional to 38,815.72, 58,221.54 and 12,520.47

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Solution

The fourth proportional to 38,815.72, 58,221.54 and 12,520.47 is: 18,780.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,815.72 : 58,221.54 = 12,520.47 : x
  2. Step 2: Convert to fraction form
    38,815.72/58,221.54 = 12,520.47/x
  3. Step 3: Cross multiply
    38,815.72x = 58,221.54 × 12,520.47
  4. Step 4: Simplify right side
    38,815.72x = 728,961,044.92
  5. Step 5: Solve for x
    x = 728,961,044.92/38,815.72
  6. Step 6: Final answer
    x = 18,780.05

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