Home / 39,450-54,441.20-21,545.01

Finding the Fourth Proportional to 39,450, 54,441.20 and 21,545.01

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Solution

The fourth proportional to 39,450, 54,441.20 and 21,545.01 is: 29,732.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,450 : 54,441.20 = 21,545.01 : x
  2. Step 2: Convert to fraction form
    39,450/54,441.20 = 21,545.01/x
  3. Step 3: Cross multiply
    39,450x = 54,441.20 × 21,545.01
  4. Step 4: Simplify right side
    39,450x = 1,172,936,198.41
  5. Step 5: Solve for x
    x = 1,172,936,198.41/39,450
  6. Step 6: Final answer
    x = 29,732.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.