Home / 9,216-19,989

Finding the Third Proportional to 9,216 and 19,989

Calculator

Solution

The third proportional to 9,216 and 19,989 is: 43,355.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,216 : 19,989 = 19,989 : x
  2. Step 2: Convert to fraction form
    9,216/19,989 = 19,989/x
  3. Step 3: Cross multiply
    9,216x = 19,989 × 19,989
  4. Step 4: Simplify right side
    9,216x = 399,560,121
  5. Step 5: Solve for x
    x = 399,560,121/9,216
  6. Step 6: Final answer
    x = 43,355.05

Related Problems

Find third proportional to 4,608 and 9,994.50
Half scale
Find third proportional to 18,432 and 39,978
Double scale
Find third proportional to 9,218 and 19,993
Similar ratio
Find third proportional to 13,824 and 29,983.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.