Home / 13,279.37-19,919.03-3,418.56

Finding the Fourth Proportional to 13,279.37, 19,919.03 and 3,418.56

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Solution

The fourth proportional to 13,279.37, 19,919.03 and 3,418.56 is: 5,127.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.37 : 19,919.03 = 3,418.56 : x
  2. Step 2: Convert to fraction form
    13,279.37/19,919.03 = 3,418.56/x
  3. Step 3: Cross multiply
    13,279.37x = 19,919.03 × 3,418.56
  4. Step 4: Simplify right side
    13,279.37x = 68,094,382.10
  5. Step 5: Solve for x
    x = 68,094,382.10/13,279.37
  6. Step 6: Final answer
    x = 5,127.83

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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.