Home / 20,180-21,719

Finding the Third Proportional to 20,180 and 21,719

Calculator

Solution

The third proportional to 20,180 and 21,719 is: 23,375.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180 : 21,719 = 21,719 : x
  2. Step 2: Convert to fraction form
    20,180/21,719 = 21,719/x
  3. Step 3: Cross multiply
    20,180x = 21,719 × 21,719
  4. Step 4: Simplify right side
    20,180x = 471,714,961
  5. Step 5: Solve for x
    x = 471,714,961/20,180
  6. Step 6: Final answer
    x = 23,375.37

Related Problems

Find third proportional to 10,090 and 10,859.50
Half scale
Find third proportional to 40,360 and 43,438
Double scale
Find third proportional to 20,182 and 21,721
Similar ratio
Find third proportional to 30,270 and 32,578.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.