Home / 8,808-12,920

Finding the Third Proportional to 8,808 and 12,920

Calculator

Solution

The third proportional to 8,808 and 12,920 is: 18,951.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,808 : 12,920 = 12,920 : x
  2. Step 2: Convert to fraction form
    8,808/12,920 = 12,920/x
  3. Step 3: Cross multiply
    8,808x = 12,920 × 12,920
  4. Step 4: Simplify right side
    8,808x = 166,926,400
  5. Step 5: Solve for x
    x = 166,926,400/8,808
  6. Step 6: Final answer
    x = 18,951.68

Related Problems

Find third proportional to 4,404 and 6,460
Half scale
Find third proportional to 17,616 and 25,840
Double scale
Find third proportional to 8,810 and 12,923
Similar ratio
Find third proportional to 13,212 and 19,380
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.