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Finding the Fourth Proportional to 39,221.91, 54,124.92 and 21,316.50

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Solution

The fourth proportional to 39,221.91, 54,124.92 and 21,316.50 is: 29,416.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,221.91 : 54,124.92 = 21,316.50 : x
  2. Step 2: Convert to fraction form
    39,221.91/54,124.92 = 21,316.50/x
  3. Step 3: Cross multiply
    39,221.91x = 54,124.92 × 21,316.50
  4. Step 4: Simplify right side
    39,221.91x = 1,153,753,857.18
  5. Step 5: Solve for x
    x = 1,153,753,857.18/39,221.91
  6. Step 6: Final answer
    x = 29,416.05

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