Home / 9,891-21,861

Finding the Third Proportional to 9,891 and 21,861

Calculator

Solution

The third proportional to 9,891 and 21,861 is: 48,316.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,891 : 21,861 = 21,861 : x
  2. Step 2: Convert to fraction form
    9,891/21,861 = 21,861/x
  3. Step 3: Cross multiply
    9,891x = 21,861 × 21,861
  4. Step 4: Simplify right side
    9,891x = 477,903,321
  5. Step 5: Solve for x
    x = 477,903,321/9,891
  6. Step 6: Final answer
    x = 48,316.99

Related Problems

Find third proportional to 4,945.50 and 10,930.50
Half scale
Find third proportional to 19,782 and 43,722
Double scale
Find third proportional to 9,893 and 21,865
Similar ratio
Find third proportional to 14,836.50 and 32,791.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.