Home / 8,211-16,905

Finding the Third Proportional to 8,211 and 16,905

Calculator

Solution

The third proportional to 8,211 and 16,905 is: 34,804.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211 : 16,905 = 16,905 : x
  2. Step 2: Convert to fraction form
    8,211/16,905 = 16,905/x
  3. Step 3: Cross multiply
    8,211x = 16,905 × 16,905
  4. Step 4: Simplify right side
    8,211x = 285,779,025
  5. Step 5: Solve for x
    x = 285,779,025/8,211
  6. Step 6: Final answer
    x = 34,804.41

Related Problems

Find third proportional to 4,105.50 and 8,452.50
Half scale
Find third proportional to 16,422 and 33,810
Double scale
Find third proportional to 8,213 and 16,909
Similar ratio
Find third proportional to 12,316.50 and 25,357.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.