Home / 13,513.24-20,269.62-4,279

Finding the Fourth Proportional to 13,513.24, 20,269.62 and 4,279

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Solution

The fourth proportional to 13,513.24, 20,269.62 and 4,279 is: 6,418.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513.24 : 20,269.62 = 4,279 : x
  2. Step 2: Convert to fraction form
    13,513.24/20,269.62 = 4,279/x
  3. Step 3: Cross multiply
    13,513.24x = 20,269.62 × 4,279
  4. Step 4: Simplify right side
    13,513.24x = 86,733,703.98
  5. Step 5: Solve for x
    x = 86,733,703.98/13,513.24
  6. Step 6: Final answer
    x = 6,418.42

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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.