Home / 12,578.33-18,870.23-3,813.91

Finding the Fourth Proportional to 12,578.33, 18,870.23 and 3,813.91

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Solution

The fourth proportional to 12,578.33, 18,870.23 and 3,813.91 is: 5,721.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.33 : 18,870.23 = 3,813.91 : x
  2. Step 2: Convert to fraction form
    12,578.33/18,870.23 = 3,813.91/x
  3. Step 3: Cross multiply
    12,578.33x = 18,870.23 × 3,813.91
  4. Step 4: Simplify right side
    12,578.33x = 71,969,292.65
  5. Step 5: Solve for x
    x = 71,969,292.65/12,578.33
  6. Step 6: Final answer
    x = 5,721.69

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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.