Home / 20,396.92-28,144.34-12,015.08

Finding the Fourth Proportional to 20,396.92, 28,144.34 and 12,015.08

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Solution

The fourth proportional to 20,396.92, 28,144.34 and 12,015.08 is: 16,578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,396.92 : 28,144.34 = 12,015.08 : x
  2. Step 2: Convert to fraction form
    20,396.92/28,144.34 = 12,015.08/x
  3. Step 3: Cross multiply
    20,396.92x = 28,144.34 × 12,015.08
  4. Step 4: Simplify right side
    20,396.92x = 338,156,496.65
  5. Step 5: Solve for x
    x = 338,156,496.65/20,396.92
  6. Step 6: Final answer
    x = 16,578.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.