Home / 12,919.91-19,379.16-4,154.13

Finding the Fourth Proportional to 12,919.91, 19,379.16 and 4,154.13

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Solution

The fourth proportional to 12,919.91, 19,379.16 and 4,154.13 is: 6,230.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.91 : 19,379.16 = 4,154.13 : x
  2. Step 2: Convert to fraction form
    12,919.91/19,379.16 = 4,154.13/x
  3. Step 3: Cross multiply
    12,919.91x = 19,379.16 × 4,154.13
  4. Step 4: Simplify right side
    12,919.91x = 80,503,549.93
  5. Step 5: Solve for x
    x = 80,503,549.93/12,919.91
  6. Step 6: Final answer
    x = 6,230.97

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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.