Home / 12,919.26-19,378.17-4,153.47

Finding the Fourth Proportional to 12,919.26, 19,378.17 and 4,153.47

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Solution

The fourth proportional to 12,919.26, 19,378.17 and 4,153.47 is: 6,229.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.26 : 19,378.17 = 4,153.47 : x
  2. Step 2: Convert to fraction form
    12,919.26/19,378.17 = 4,153.47/x
  3. Step 3: Cross multiply
    12,919.26x = 19,378.17 × 4,153.47
  4. Step 4: Simplify right side
    12,919.26x = 80,486,647.75
  5. Step 5: Solve for x
    x = 80,486,647.75/12,919.26
  6. Step 6: Final answer
    x = 6,229.97

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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.