Home / 17,190-18,486

Finding the Third Proportional to 17,190 and 18,486

Calculator

Solution

The third proportional to 17,190 and 18,486 is: 19,879.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,190 : 18,486 = 18,486 : x
  2. Step 2: Convert to fraction form
    17,190/18,486 = 18,486/x
  3. Step 3: Cross multiply
    17,190x = 18,486 × 18,486
  4. Step 4: Simplify right side
    17,190x = 341,732,196
  5. Step 5: Solve for x
    x = 341,732,196/17,190
  6. Step 6: Final answer
    x = 19,879.71

Related Problems

Find third proportional to 8,595 and 9,243
Half scale
Find third proportional to 34,380 and 36,972
Double scale
Find third proportional to 17,192 and 18,488
Similar ratio
Find third proportional to 25,785 and 27,729
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.