Home / 8,320-18,416

Finding the Third Proportional to 8,320 and 18,416

Calculator

Solution

The third proportional to 8,320 and 18,416 is: 40,763.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320 : 18,416 = 18,416 : x
  2. Step 2: Convert to fraction form
    8,320/18,416 = 18,416/x
  3. Step 3: Cross multiply
    8,320x = 18,416 × 18,416
  4. Step 4: Simplify right side
    8,320x = 339,149,056
  5. Step 5: Solve for x
    x = 339,149,056/8,320
  6. Step 6: Final answer
    x = 40,763.11

Related Problems

Find third proportional to 4,160 and 9,208
Half scale
Find third proportional to 16,640 and 36,832
Double scale
Find third proportional to 8,322 and 18,420
Similar ratio
Find third proportional to 12,480 and 27,624
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.