Home / 11,921-18,408

Finding the Third Proportional to 11,921 and 18,408

Calculator

Solution

The third proportional to 11,921 and 18,408 is: 28,425.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,921 : 18,408 = 18,408 : x
  2. Step 2: Convert to fraction form
    11,921/18,408 = 18,408/x
  3. Step 3: Cross multiply
    11,921x = 18,408 × 18,408
  4. Step 4: Simplify right side
    11,921x = 338,854,464
  5. Step 5: Solve for x
    x = 338,854,464/11,921
  6. Step 6: Final answer
    x = 28,425.00

Related Problems

Find third proportional to 5,960.50 and 9,204
Half scale
Find third proportional to 23,842 and 36,816
Double scale
Find third proportional to 11,923 and 18,411
Similar ratio
Find third proportional to 17,881.50 and 27,612
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.