Home / 13,279.53-19,919.31-3,418.83

Finding the Fourth Proportional to 13,279.53, 19,919.31 and 3,418.83

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Solution

The fourth proportional to 13,279.53, 19,919.31 and 3,418.83 is: 5,128.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.53 : 19,919.31 = 3,418.83 : x
  2. Step 2: Convert to fraction form
    13,279.53/19,919.31 = 3,418.83/x
  3. Step 3: Cross multiply
    13,279.53x = 19,919.31 × 3,418.83
  4. Step 4: Simplify right side
    13,279.53x = 68,100,734.61
  5. Step 5: Solve for x
    x = 68,100,734.61/13,279.53
  6. Step 6: Final answer
    x = 5,128.25

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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.