Home / 20,418-31,231

Finding the Third Proportional to 20,418 and 31,231

Calculator

Solution

The third proportional to 20,418 and 31,231 is: 47,770.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,418 : 31,231 = 31,231 : x
  2. Step 2: Convert to fraction form
    20,418/31,231 = 31,231/x
  3. Step 3: Cross multiply
    20,418x = 31,231 × 31,231
  4. Step 4: Simplify right side
    20,418x = 975,375,361
  5. Step 5: Solve for x
    x = 975,375,361/20,418
  6. Step 6: Final answer
    x = 47,770.37

Related Problems

Find third proportional to 10,209 and 15,615.50
Half scale
Find third proportional to 40,836 and 62,462
Double scale
Find third proportional to 20,420 and 31,234
Similar ratio
Find third proportional to 30,627 and 46,846.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.