Home / 17,286-18,942

Finding the Third Proportional to 17,286 and 18,942

Calculator

Solution

The third proportional to 17,286 and 18,942 is: 20,756.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,286 : 18,942 = 18,942 : x
  2. Step 2: Convert to fraction form
    17,286/18,942 = 18,942/x
  3. Step 3: Cross multiply
    17,286x = 18,942 × 18,942
  4. Step 4: Simplify right side
    17,286x = 358,799,364
  5. Step 5: Solve for x
    x = 358,799,364/17,286
  6. Step 6: Final answer
    x = 20,756.64

Related Problems

Find third proportional to 8,643 and 9,471
Half scale
Find third proportional to 34,572 and 37,884
Double scale
Find third proportional to 17,288 and 18,944
Similar ratio
Find third proportional to 25,929 and 28,413
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.