Home / 9,719-20,989

Finding the Third Proportional to 9,719 and 20,989

Calculator

Solution

The third proportional to 9,719 and 20,989 is: 45,327.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,719 : 20,989 = 20,989 : x
  2. Step 2: Convert to fraction form
    9,719/20,989 = 20,989/x
  3. Step 3: Cross multiply
    9,719x = 20,989 × 20,989
  4. Step 4: Simplify right side
    9,719x = 440,538,121
  5. Step 5: Solve for x
    x = 440,538,121/9,719
  6. Step 6: Final answer
    x = 45,327.52

Related Problems

Find third proportional to 4,859.50 and 10,494.50
Half scale
Find third proportional to 19,438 and 41,978
Double scale
Find third proportional to 9,721 and 20,993
Similar ratio
Find third proportional to 14,578.50 and 31,483.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.