Home / 8,840-20,872

Finding the Third Proportional to 8,840 and 20,872

Calculator

Solution

The third proportional to 8,840 and 20,872 is: 49,280.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,840 : 20,872 = 20,872 : x
  2. Step 2: Convert to fraction form
    8,840/20,872 = 20,872/x
  3. Step 3: Cross multiply
    8,840x = 20,872 × 20,872
  4. Step 4: Simplify right side
    8,840x = 435,640,384
  5. Step 5: Solve for x
    x = 435,640,384/8,840
  6. Step 6: Final answer
    x = 49,280.59

Related Problems

Find third proportional to 4,420 and 10,436
Half scale
Find third proportional to 17,680 and 41,744
Double scale
Find third proportional to 8,842 and 20,877
Similar ratio
Find third proportional to 13,260 and 31,308
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.