Home / 20,986-40,907

Finding the Third Proportional to 20,986 and 40,907

Calculator

Solution

The third proportional to 20,986 and 40,907 is: 79,738.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986 : 40,907 = 40,907 : x
  2. Step 2: Convert to fraction form
    20,986/40,907 = 40,907/x
  3. Step 3: Cross multiply
    20,986x = 40,907 × 40,907
  4. Step 4: Simplify right side
    20,986x = 1,673,382,649
  5. Step 5: Solve for x
    x = 1,673,382,649/20,986
  6. Step 6: Final answer
    x = 79,738.05

Related Problems

Find third proportional to 10,493 and 20,453.50
Half scale
Find third proportional to 41,972 and 81,814
Double scale
Find third proportional to 20,988 and 40,911
Similar ratio
Find third proportional to 31,479 and 61,360.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.