Home / 8,245-12,770

Finding the Third Proportional to 8,245 and 12,770

Calculator

Solution

The third proportional to 8,245 and 12,770 is: 19,778.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,245 : 12,770 = 12,770 : x
  2. Step 2: Convert to fraction form
    8,245/12,770 = 12,770/x
  3. Step 3: Cross multiply
    8,245x = 12,770 × 12,770
  4. Step 4: Simplify right side
    8,245x = 163,072,900
  5. Step 5: Solve for x
    x = 163,072,900/8,245
  6. Step 6: Final answer
    x = 19,778.40

Related Problems

Find third proportional to 4,122.50 and 6,385
Half scale
Find third proportional to 16,490 and 25,540
Double scale
Find third proportional to 8,247 and 12,773
Similar ratio
Find third proportional to 12,367.50 and 19,155
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.