Home / 8,138-12,245

Finding the Third Proportional to 8,138 and 12,245

Calculator

Solution

The third proportional to 8,138 and 12,245 is: 18,424.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138 : 12,245 = 12,245 : x
  2. Step 2: Convert to fraction form
    8,138/12,245 = 12,245/x
  3. Step 3: Cross multiply
    8,138x = 12,245 × 12,245
  4. Step 4: Simplify right side
    8,138x = 149,940,025
  5. Step 5: Solve for x
    x = 149,940,025/8,138
  6. Step 6: Final answer
    x = 18,424.68

Related Problems

Find third proportional to 4,069 and 6,122.50
Half scale
Find third proportional to 16,276 and 24,490
Double scale
Find third proportional to 8,140 and 12,248
Similar ratio
Find third proportional to 12,207 and 18,367.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.