Home / 8,830-21,085

Finding the Third Proportional to 8,830 and 21,085

Calculator

Solution

The third proportional to 8,830 and 21,085 is: 50,348.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,830 : 21,085 = 21,085 : x
  2. Step 2: Convert to fraction form
    8,830/21,085 = 21,085/x
  3. Step 3: Cross multiply
    8,830x = 21,085 × 21,085
  4. Step 4: Simplify right side
    8,830x = 444,577,225
  5. Step 5: Solve for x
    x = 444,577,225/8,830
  6. Step 6: Final answer
    x = 50,348.50

Related Problems

Find third proportional to 4,415 and 10,542.50
Half scale
Find third proportional to 17,660 and 42,170
Double scale
Find third proportional to 8,832 and 21,090
Similar ratio
Find third proportional to 13,245 and 31,627.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.