Home / 13,791.76-20,687.74-3,403.51

Finding the Fourth Proportional to 13,791.76, 20,687.74 and 3,403.51

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Solution

The fourth proportional to 13,791.76, 20,687.74 and 3,403.51 is: 5,105.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,791.76 : 20,687.74 = 3,403.51 : x
  2. Step 2: Convert to fraction form
    13,791.76/20,687.74 = 3,403.51/x
  3. Step 3: Cross multiply
    13,791.76x = 20,687.74 × 3,403.51
  4. Step 4: Simplify right side
    13,791.76x = 70,410,869.74
  5. Step 5: Solve for x
    x = 70,410,869.74/13,791.76
  6. Step 6: Final answer
    x = 5,105.29

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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.