Home / 39,788.20-54,905.61-21,883.96

Finding the Fourth Proportional to 39,788.20, 54,905.61 and 21,883.96

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Solution

The fourth proportional to 39,788.20, 54,905.61 and 21,883.96 is: 30,198.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,788.20 : 54,905.61 = 21,883.96 : x
  2. Step 2: Convert to fraction form
    39,788.20/54,905.61 = 21,883.96/x
  3. Step 3: Cross multiply
    39,788.20x = 54,905.61 × 21,883.96
  4. Step 4: Simplify right side
    39,788.20x = 1,201,552,173.02
  5. Step 5: Solve for x
    x = 1,201,552,173.02/39,788.20
  6. Step 6: Final answer
    x = 30,198.71

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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.