Home / 13,820.31-20,723.97-5,049.09

Finding the Fourth Proportional to 13,820.31, 20,723.97 and 5,049.09

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Solution

The fourth proportional to 13,820.31, 20,723.97 and 5,049.09 is: 7,571.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.31 : 20,723.97 = 5,049.09 : x
  2. Step 2: Convert to fraction form
    13,820.31/20,723.97 = 5,049.09/x
  3. Step 3: Cross multiply
    13,820.31x = 20,723.97 × 5,049.09
  4. Step 4: Simplify right side
    13,820.31x = 104,637,189.69
  5. Step 5: Solve for x
    x = 104,637,189.69/13,820.31
  6. Step 6: Final answer
    x = 7,571.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.