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Finding the Fourth Proportional to 22,229.76, 30,548.76 and 21,201.84

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Solution

The fourth proportional to 22,229.76, 30,548.76 and 21,201.84 is: 29,136.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,229.76 : 30,548.76 = 21,201.84 : x
  2. Step 2: Convert to fraction form
    22,229.76/30,548.76 = 21,201.84/x
  3. Step 3: Cross multiply
    22,229.76x = 30,548.76 × 21,201.84
  4. Step 4: Simplify right side
    22,229.76x = 647,689,921.72
  5. Step 5: Solve for x
    x = 647,689,921.72/22,229.76
  6. Step 6: Final answer
    x = 29,136.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.