Home / 21,229.78-29,297.49-11,799.22

Finding the Fourth Proportional to 21,229.78, 29,297.49 and 11,799.22

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Solution

The fourth proportional to 21,229.78, 29,297.49 and 11,799.22 is: 16,283.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.78 : 29,297.49 = 11,799.22 : x
  2. Step 2: Convert to fraction form
    21,229.78/29,297.49 = 11,799.22/x
  3. Step 3: Cross multiply
    21,229.78x = 29,297.49 × 11,799.22
  4. Step 4: Simplify right side
    21,229.78x = 345,687,529.96
  5. Step 5: Solve for x
    x = 345,687,529.96/21,229.78
  6. Step 6: Final answer
    x = 16,283.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.