Home / 10,908-18,378

Finding the Third Proportional to 10,908 and 18,378

Calculator

Solution

The third proportional to 10,908 and 18,378 is: 30,963.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,908 : 18,378 = 18,378 : x
  2. Step 2: Convert to fraction form
    10,908/18,378 = 18,378/x
  3. Step 3: Cross multiply
    10,908x = 18,378 × 18,378
  4. Step 4: Simplify right side
    10,908x = 337,750,884
  5. Step 5: Solve for x
    x = 337,750,884/10,908
  6. Step 6: Final answer
    x = 30,963.59

Related Problems

Find third proportional to 5,454 and 9,189
Half scale
Find third proportional to 21,816 and 36,756
Double scale
Find third proportional to 10,910 and 18,381
Similar ratio
Find third proportional to 16,362 and 27,567
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.