Home / 19,912.20-29,871.02-6,761.04

Finding the Fourth Proportional to 19,912.20, 29,871.02 and 6,761.04

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Solution

The fourth proportional to 19,912.20, 29,871.02 and 6,761.04 is: 10,142.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,912.20 : 29,871.02 = 6,761.04 : x
  2. Step 2: Convert to fraction form
    19,912.20/29,871.02 = 6,761.04/x
  3. Step 3: Cross multiply
    19,912.20x = 29,871.02 × 6,761.04
  4. Step 4: Simplify right side
    19,912.20x = 201,959,161.06
  5. Step 5: Solve for x
    x = 201,959,161.06/19,912.20
  6. Step 6: Final answer
    x = 10,142.48

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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.