Home / 21,274.92-31,912.38-9,591.48

Finding the Fourth Proportional to 21,274.92, 31,912.38 and 9,591.48

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Solution

The fourth proportional to 21,274.92, 31,912.38 and 9,591.48 is: 14,387.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,274.92 : 31,912.38 = 9,591.48 : x
  2. Step 2: Convert to fraction form
    21,274.92/31,912.38 = 9,591.48/x
  3. Step 3: Cross multiply
    21,274.92x = 31,912.38 × 9,591.48
  4. Step 4: Simplify right side
    21,274.92x = 306,086,954.52
  5. Step 5: Solve for x
    x = 306,086,954.52/21,274.92
  6. Step 6: Final answer
    x = 14,387.22

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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.