Home / 21,229.28-29,297.40-11,798

Finding the Fourth Proportional to 21,229.28, 29,297.40 and 11,798

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Solution

The fourth proportional to 21,229.28, 29,297.40 and 11,798 is: 16,281.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.28 : 29,297.40 = 11,798 : x
  2. Step 2: Convert to fraction form
    21,229.28/29,297.40 = 11,798/x
  3. Step 3: Cross multiply
    21,229.28x = 29,297.40 × 11,798
  4. Step 4: Simplify right side
    21,229.28x = 345,650,725.20
  5. Step 5: Solve for x
    x = 345,650,725.20/21,229.28
  6. Step 6: Final answer
    x = 16,281.79

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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.