Home / 39,579.21-54,619.26-21,674.56

Finding the Fourth Proportional to 39,579.21, 54,619.26 and 21,674.56

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Solution

The fourth proportional to 39,579.21, 54,619.26 and 21,674.56 is: 29,910.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,579.21 : 54,619.26 = 21,674.56 : x
  2. Step 2: Convert to fraction form
    39,579.21/54,619.26 = 21,674.56/x
  3. Step 3: Cross multiply
    39,579.21x = 54,619.26 × 21,674.56
  4. Step 4: Simplify right side
    39,579.21x = 1,183,848,428.03
  5. Step 5: Solve for x
    x = 1,183,848,428.03/39,579.21
  6. Step 6: Final answer
    x = 29,910.87

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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.