Home / 21,191.09-29,245.08-11,759.66

Finding the Fourth Proportional to 21,191.09, 29,245.08 and 11,759.66

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Solution

The fourth proportional to 21,191.09, 29,245.08 and 11,759.66 is: 16,229.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,191.09 : 29,245.08 = 11,759.66 : x
  2. Step 2: Convert to fraction form
    21,191.09/29,245.08 = 11,759.66/x
  3. Step 3: Cross multiply
    21,191.09x = 29,245.08 × 11,759.66
  4. Step 4: Simplify right side
    21,191.09x = 343,912,197.47
  5. Step 5: Solve for x
    x = 343,912,197.47/21,191.09
  6. Step 6: Final answer
    x = 16,229.09

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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.