Home / 18,170-39,211

Finding the Third Proportional to 18,170 and 39,211

Calculator

Solution

The third proportional to 18,170 and 39,211 is: 84,617.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,170 : 39,211 = 39,211 : x
  2. Step 2: Convert to fraction form
    18,170/39,211 = 39,211/x
  3. Step 3: Cross multiply
    18,170x = 39,211 × 39,211
  4. Step 4: Simplify right side
    18,170x = 1,537,502,521
  5. Step 5: Solve for x
    x = 1,537,502,521/18,170
  6. Step 6: Final answer
    x = 84,617.64

Related Problems

Find third proportional to 9,085 and 19,605.50
Half scale
Find third proportional to 36,340 and 78,422
Double scale
Find third proportional to 18,172 and 39,215
Similar ratio
Find third proportional to 27,255 and 58,816.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.