Home / 8,215-18,020

Finding the Third Proportional to 8,215 and 18,020

Calculator

Solution

The third proportional to 8,215 and 18,020 is: 39,527.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215 : 18,020 = 18,020 : x
  2. Step 2: Convert to fraction form
    8,215/18,020 = 18,020/x
  3. Step 3: Cross multiply
    8,215x = 18,020 × 18,020
  4. Step 4: Simplify right side
    8,215x = 324,720,400
  5. Step 5: Solve for x
    x = 324,720,400/8,215
  6. Step 6: Final answer
    x = 39,527.74

Related Problems

Find third proportional to 4,107.50 and 9,010
Half scale
Find third proportional to 16,430 and 36,040
Double scale
Find third proportional to 8,217 and 18,024
Similar ratio
Find third proportional to 12,322.50 and 27,030
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.