Home / 12,579.65-18,872.19-3,815.22

Finding the Fourth Proportional to 12,579.65, 18,872.19 and 3,815.22

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Solution

The fourth proportional to 12,579.65, 18,872.19 and 3,815.22 is: 5,723.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.65 : 18,872.19 = 3,815.22 : x
  2. Step 2: Convert to fraction form
    12,579.65/18,872.19 = 3,815.22/x
  3. Step 3: Cross multiply
    12,579.65x = 18,872.19 × 3,815.22
  4. Step 4: Simplify right side
    12,579.65x = 72,001,556.73
  5. Step 5: Solve for x
    x = 72,001,556.73/12,579.65
  6. Step 6: Final answer
    x = 5,723.66

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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.