Home / 9,405-20,105

Finding the Third Proportional to 9,405 and 20,105

Calculator

Solution

The third proportional to 9,405 and 20,105 is: 42,978.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,405 : 20,105 = 20,105 : x
  2. Step 2: Convert to fraction form
    9,405/20,105 = 20,105/x
  3. Step 3: Cross multiply
    9,405x = 20,105 × 20,105
  4. Step 4: Simplify right side
    9,405x = 404,211,025
  5. Step 5: Solve for x
    x = 404,211,025/9,405
  6. Step 6: Final answer
    x = 42,978.31

Related Problems

Find third proportional to 4,702.50 and 10,052.50
Half scale
Find third proportional to 18,810 and 40,210
Double scale
Find third proportional to 9,407 and 20,109
Similar ratio
Find third proportional to 14,107.50 and 30,157.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.