Home / 39,821.85-54,954.55-21,917.27

Finding the Fourth Proportional to 39,821.85, 54,954.55 and 21,917.27

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Solution

The fourth proportional to 39,821.85, 54,954.55 and 21,917.27 is: 30,246.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,821.85 : 54,954.55 = 21,917.27 : x
  2. Step 2: Convert to fraction form
    39,821.85/54,954.55 = 21,917.27/x
  3. Step 3: Cross multiply
    39,821.85x = 54,954.55 × 21,917.27
  4. Step 4: Simplify right side
    39,821.85x = 1,204,453,674.30
  5. Step 5: Solve for x
    x = 1,204,453,674.30/39,821.85
  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.