Home / 21,734.22-29,991.15-17,268.78

Finding the Fourth Proportional to 21,734.22, 29,991.15 and 17,268.78

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Solution

The fourth proportional to 21,734.22, 29,991.15 and 17,268.78 is: 23,829.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,734.22 : 29,991.15 = 17,268.78 : x
  2. Step 2: Convert to fraction form
    21,734.22/29,991.15 = 17,268.78/x
  3. Step 3: Cross multiply
    21,734.22x = 29,991.15 × 17,268.78
  4. Step 4: Simplify right side
    21,734.22x = 517,910,571.30
  5. Step 5: Solve for x
    x = 517,910,571.30/21,734.22
  6. Step 6: Final answer
    x = 23,829.27

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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.