Home / 8,308-18,218

Finding the Third Proportional to 8,308 and 18,218

Calculator

Solution

The third proportional to 8,308 and 18,218 is: 39,948.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,308 : 18,218 = 18,218 : x
  2. Step 2: Convert to fraction form
    8,308/18,218 = 18,218/x
  3. Step 3: Cross multiply
    8,308x = 18,218 × 18,218
  4. Step 4: Simplify right side
    8,308x = 331,895,524
  5. Step 5: Solve for x
    x = 331,895,524/8,308
  6. Step 6: Final answer
    x = 39,948.91

Related Problems

Find third proportional to 4,154 and 9,109
Half scale
Find third proportional to 16,616 and 36,436
Double scale
Find third proportional to 8,310 and 18,222
Similar ratio
Find third proportional to 12,462 and 27,327
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.