Home / 13,424.45-20,136.54-8,160.92

Finding the Fourth Proportional to 13,424.45, 20,136.54 and 8,160.92

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Solution

The fourth proportional to 13,424.45, 20,136.54 and 8,160.92 is: 12,241.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.45 : 20,136.54 = 8,160.92 : x
  2. Step 2: Convert to fraction form
    13,424.45/20,136.54 = 8,160.92/x
  3. Step 3: Cross multiply
    13,424.45x = 20,136.54 × 8,160.92
  4. Step 4: Simplify right side
    13,424.45x = 164,332,591.33
  5. Step 5: Solve for x
    x = 164,332,591.33/13,424.45
  6. Step 6: Final answer
    x = 12,241.29

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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.