Home / 18,828-40,208

Finding the Third Proportional to 18,828 and 40,208

Calculator

Solution

The third proportional to 18,828 and 40,208 is: 85,865.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,828 : 40,208 = 40,208 : x
  2. Step 2: Convert to fraction form
    18,828/40,208 = 40,208/x
  3. Step 3: Cross multiply
    18,828x = 40,208 × 40,208
  4. Step 4: Simplify right side
    18,828x = 1,616,683,264
  5. Step 5: Solve for x
    x = 1,616,683,264/18,828
  6. Step 6: Final answer
    x = 85,865.91

Related Problems

Find third proportional to 9,414 and 20,104
Half scale
Find third proportional to 37,656 and 80,416
Double scale
Find third proportional to 18,830 and 40,212
Similar ratio
Find third proportional to 28,242 and 60,312
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.