Home / 19,912.69-29,871.78-6,761.53

Finding the Fourth Proportional to 19,912.69, 29,871.78 and 6,761.53

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Solution

The fourth proportional to 19,912.69, 29,871.78 and 6,761.53 is: 10,143.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,912.69 : 29,871.78 = 6,761.53 : x
  2. Step 2: Convert to fraction form
    19,912.69/29,871.78 = 6,761.53/x
  3. Step 3: Cross multiply
    19,912.69x = 29,871.78 × 6,761.53
  4. Step 4: Simplify right side
    19,912.69x = 201,978,936.62
  5. Step 5: Solve for x
    x = 201,978,936.62/19,912.69
  6. Step 6: Final answer
    x = 10,143.23

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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.