Home / 12,579.57-18,869.31-3,814.47

Finding the Fourth Proportional to 12,579.57, 18,869.31 and 3,814.47

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Solution

The fourth proportional to 12,579.57, 18,869.31 and 3,814.47 is: 5,721.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.57 : 18,869.31 = 3,814.47 : x
  2. Step 2: Convert to fraction form
    12,579.57/18,869.31 = 3,814.47/x
  3. Step 3: Cross multiply
    12,579.57x = 18,869.31 × 3,814.47
  4. Step 4: Simplify right side
    12,579.57x = 71,976,416.92
  5. Step 5: Solve for x
    x = 71,976,416.92/12,579.57
  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.