Home / 12,141.05-18,212.36-3,821.38

Finding the Fourth Proportional to 12,141.05, 18,212.36 and 3,821.38

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Solution

The fourth proportional to 12,141.05, 18,212.36 and 3,821.38 is: 5,732.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,141.05 : 18,212.36 = 3,821.38 : x
  2. Step 2: Convert to fraction form
    12,141.05/18,212.36 = 3,821.38/x
  3. Step 3: Cross multiply
    12,141.05x = 18,212.36 × 3,821.38
  4. Step 4: Simplify right side
    12,141.05x = 69,596,283.62
  5. Step 5: Solve for x
    x = 69,596,283.62/12,141.05
  6. Step 6: Final answer
    x = 5,732.31

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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.