Home / 18,818-40,228

Finding the Third Proportional to 18,818 and 40,228

Calculator

Solution

The third proportional to 18,818 and 40,228 is: 85,997.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818 : 40,228 = 40,228 : x
  2. Step 2: Convert to fraction form
    18,818/40,228 = 40,228/x
  3. Step 3: Cross multiply
    18,818x = 40,228 × 40,228
  4. Step 4: Simplify right side
    18,818x = 1,618,291,984
  5. Step 5: Solve for x
    x = 1,618,291,984/18,818
  6. Step 6: Final answer
    x = 85,997.02

Related Problems

Find third proportional to 9,409 and 20,114
Half scale
Find third proportional to 37,636 and 80,456
Double scale
Find third proportional to 18,820 and 40,232
Similar ratio
Find third proportional to 28,227 and 60,342
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.