Home / 39,821.89-54,954.60-21,917.27

Finding the Fourth Proportional to 39,821.89, 54,954.60 and 21,917.27

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Solution

The fourth proportional to 39,821.89, 54,954.60 and 21,917.27 is: 30,246.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,821.89 : 54,954.60 = 21,917.27 : x
  2. Step 2: Convert to fraction form
    39,821.89/54,954.60 = 21,917.27/x
  3. Step 3: Cross multiply
    39,821.89x = 54,954.60 × 21,917.27
  4. Step 4: Simplify right side
    39,821.89x = 1,204,454,907.14
  5. Step 5: Solve for x
    x = 1,204,454,907.14/39,821.89
  6. Step 6: Final answer
    x = 30,246.05

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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.