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Finding the Fourth Proportional to 33,912.34, 50,891.07 and 13,938.21

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Solution

The fourth proportional to 33,912.34, 50,891.07 and 13,938.21 is: 20,916.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,912.34 : 50,891.07 = 13,938.21 : x
  2. Step 2: Convert to fraction form
    33,912.34/50,891.07 = 13,938.21/x
  3. Step 3: Cross multiply
    33,912.34x = 50,891.07 × 13,938.21
  4. Step 4: Simplify right side
    33,912.34x = 709,330,420.78
  5. Step 5: Solve for x
    x = 709,330,420.78/33,912.34
  6. Step 6: Final answer
    x = 20,916.59

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1.5x scale

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.