Home / 21,191.36-29,245.43-11,759.92

Finding the Fourth Proportional to 21,191.36, 29,245.43 and 11,759.92

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Solution

The fourth proportional to 21,191.36, 29,245.43 and 11,759.92 is: 16,229.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.36 : 29,245.43 = 11,759.92 : x
  2. Step 2: Convert to fraction form
    21,191.36/29,245.43 = 11,759.92/x
  3. Step 3: Cross multiply
    21,191.36x = 29,245.43 × 11,759.92
  4. Step 4: Simplify right side
    21,191.36x = 343,923,873.45
  5. Step 5: Solve for x
    x = 343,923,873.45/21,191.36
  6. Step 6: Final answer
    x = 16,229.44

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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.