Home / 13,418.93-20,136.59-8,481.77

Finding the Fourth Proportional to 13,418.93, 20,136.59 and 8,481.77

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Solution

The fourth proportional to 13,418.93, 20,136.59 and 8,481.77 is: 12,727.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.93 : 20,136.59 = 8,481.77 : x
  2. Step 2: Convert to fraction form
    13,418.93/20,136.59 = 8,481.77/x
  3. Step 3: Cross multiply
    13,418.93x = 20,136.59 × 8,481.77
  4. Step 4: Simplify right side
    13,418.93x = 170,793,882.56
  5. Step 5: Solve for x
    x = 170,793,882.56/13,418.93
  6. Step 6: Final answer
    x = 12,727.83

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1.5x scale

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.