Home / 21,938.26-32,912.25-12,072.46

Finding the Fourth Proportional to 21,938.26, 32,912.25 and 12,072.46

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Solution

The fourth proportional to 21,938.26, 32,912.25 and 12,072.46 is: 18,111.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,938.26 : 32,912.25 = 12,072.46 : x
  2. Step 2: Convert to fraction form
    21,938.26/32,912.25 = 12,072.46/x
  3. Step 3: Cross multiply
    21,938.26x = 32,912.25 × 12,072.46
  4. Step 4: Simplify right side
    21,938.26x = 397,331,821.64
  5. Step 5: Solve for x
    x = 397,331,821.64/21,938.26
  6. Step 6: Final answer
    x = 18,111.36

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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.