Home / 13,418.68-20,136.21-8,481.52

Finding the Fourth Proportional to 13,418.68, 20,136.21 and 8,481.52

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Solution

The fourth proportional to 13,418.68, 20,136.21 and 8,481.52 is: 12,727.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,418.68 : 20,136.21 = 8,481.52 : x
  2. Step 2: Convert to fraction form
    13,418.68/20,136.21 = 8,481.52/x
  3. Step 3: Cross multiply
    13,418.68x = 20,136.21 × 8,481.52
  4. Step 4: Simplify right side
    13,418.68x = 170,785,667.84
  5. Step 5: Solve for x
    x = 170,785,667.84/13,418.68
  6. Step 6: Final answer
    x = 12,727.46

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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.