Home / 19,297.38-28,912.97-12,960.38

Finding the Fourth Proportional to 19,297.38, 28,912.97 and 12,960.38

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Solution

The fourth proportional to 19,297.38, 28,912.97 and 12,960.38 is: 19,418.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,297.38 : 28,912.97 = 12,960.38 : x
  2. Step 2: Convert to fraction form
    19,297.38/28,912.97 = 12,960.38/x
  3. Step 3: Cross multiply
    19,297.38x = 28,912.97 × 12,960.38
  4. Step 4: Simplify right side
    19,297.38x = 374,723,078.13
  5. Step 5: Solve for x
    x = 374,723,078.13/19,297.38
  6. Step 6: Final answer
    x = 19,418.34

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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.