Home / 9,940-11,020

Finding the Third Proportional to 9,940 and 11,020

Calculator

Solution

The third proportional to 9,940 and 11,020 is: 12,217.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,940 : 11,020 = 11,020 : x
  2. Step 2: Convert to fraction form
    9,940/11,020 = 11,020/x
  3. Step 3: Cross multiply
    9,940x = 11,020 × 11,020
  4. Step 4: Simplify right side
    9,940x = 121,440,400
  5. Step 5: Solve for x
    x = 121,440,400/9,940
  6. Step 6: Final answer
    x = 12,217.34

Related Problems

Find third proportional to 4,970 and 5,510
Half scale
Find third proportional to 19,880 and 22,040
Double scale
Find third proportional to 9,942 and 11,022
Similar ratio
Find third proportional to 14,910 and 16,530
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.