Home / 11,821-18,329

Finding the Third Proportional to 11,821 and 18,329

Calculator

Solution

The third proportional to 11,821 and 18,329 is: 28,419.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821 : 18,329 = 18,329 : x
  2. Step 2: Convert to fraction form
    11,821/18,329 = 18,329/x
  3. Step 3: Cross multiply
    11,821x = 18,329 × 18,329
  4. Step 4: Simplify right side
    11,821x = 335,952,241
  5. Step 5: Solve for x
    x = 335,952,241/11,821
  6. Step 6: Final answer
    x = 28,419.95

Related Problems

Find third proportional to 5,910.50 and 9,164.50
Half scale
Find third proportional to 23,642 and 36,658
Double scale
Find third proportional to 11,823 and 18,332
Similar ratio
Find third proportional to 17,731.50 and 27,493.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.