Home / 12,578.27-18,869.36-3,811.10

Finding the Fourth Proportional to 12,578.27, 18,869.36 and 3,811.10

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Solution

The fourth proportional to 12,578.27, 18,869.36 and 3,811.10 is: 5,717.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.27 : 18,869.36 = 3,811.10 : x
  2. Step 2: Convert to fraction form
    12,578.27/18,869.36 = 3,811.10/x
  3. Step 3: Cross multiply
    12,578.27x = 18,869.36 × 3,811.10
  4. Step 4: Simplify right side
    12,578.27x = 71,912,904.49
  5. Step 5: Solve for x
    x = 71,912,904.49/12,578.27
  6. Step 6: Final answer
    x = 5,717.24

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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.