Home / 20,145-40,684

Finding the Third Proportional to 20,145 and 40,684

Calculator

Solution

The third proportional to 20,145 and 40,684 is: 82,163.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145 : 40,684 = 40,684 : x
  2. Step 2: Convert to fraction form
    20,145/40,684 = 40,684/x
  3. Step 3: Cross multiply
    20,145x = 40,684 × 40,684
  4. Step 4: Simplify right side
    20,145x = 1,655,187,856
  5. Step 5: Solve for x
    x = 1,655,187,856/20,145
  6. Step 6: Final answer
    x = 82,163.71

Related Problems

Find third proportional to 10,072.50 and 20,342
Half scale
Find third proportional to 40,290 and 81,368
Double scale
Find third proportional to 20,147 and 40,688
Similar ratio
Find third proportional to 30,217.50 and 61,026
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.02) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.