Home / 39,816.41-54,945.27-21,909.74

Finding the Fourth Proportional to 39,816.41, 54,945.27 and 21,909.74

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Solution

The fourth proportional to 39,816.41, 54,945.27 and 21,909.74 is: 30,234.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,816.41 : 54,945.27 = 21,909.74 : x
  2. Step 2: Convert to fraction form
    39,816.41/54,945.27 = 21,909.74/x
  3. Step 3: Cross multiply
    39,816.41x = 54,945.27 × 21,909.74
  4. Step 4: Simplify right side
    39,816.41x = 1,203,836,579.93
  5. Step 5: Solve for x
    x = 1,203,836,579.93/39,816.41
  6. Step 6: Final answer
    x = 30,234.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.