Home / 21,912.11-32,896.41-18,812.04

Finding the Fourth Proportional to 21,912.11, 32,896.41 and 18,812.04

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Solution

The fourth proportional to 21,912.11, 32,896.41 and 18,812.04 is: 28,242.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,912.11 : 32,896.41 = 18,812.04 : x
  2. Step 2: Convert to fraction form
    21,912.11/32,896.41 = 18,812.04/x
  3. Step 3: Cross multiply
    21,912.11x = 32,896.41 × 18,812.04
  4. Step 4: Simplify right side
    21,912.11x = 618,848,580.78
  5. Step 5: Solve for x
    x = 618,848,580.78/21,912.11
  6. Step 6: Final answer
    x = 28,242.31

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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.