Home / 9,378-12,381

Finding the Third Proportional to 9,378 and 12,381

Calculator

Solution

The third proportional to 9,378 and 12,381 is: 16,345.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,378 : 12,381 = 12,381 : x
  2. Step 2: Convert to fraction form
    9,378/12,381 = 12,381/x
  3. Step 3: Cross multiply
    9,378x = 12,381 × 12,381
  4. Step 4: Simplify right side
    9,378x = 153,289,161
  5. Step 5: Solve for x
    x = 153,289,161/9,378
  6. Step 6: Final answer
    x = 16,345.61

Related Problems

Find third proportional to 4,689 and 6,190.50
Half scale
Find third proportional to 18,756 and 24,762
Double scale
Find third proportional to 9,380 and 12,384
Similar ratio
Find third proportional to 14,067 and 18,571.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.