Home / 20,778-45,284

Finding the Third Proportional to 20,778 and 45,284

Calculator

Solution

The third proportional to 20,778 and 45,284 is: 98,692.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778 : 45,284 = 45,284 : x
  2. Step 2: Convert to fraction form
    20,778/45,284 = 45,284/x
  3. Step 3: Cross multiply
    20,778x = 45,284 × 45,284
  4. Step 4: Simplify right side
    20,778x = 2,050,640,656
  5. Step 5: Solve for x
    x = 2,050,640,656/20,778
  6. Step 6: Final answer
    x = 98,692.88

Related Problems

Find third proportional to 10,389 and 22,642
Half scale
Find third proportional to 41,556 and 90,568
Double scale
Find third proportional to 20,780 and 45,288
Similar ratio
Find third proportional to 31,167 and 67,926
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.