Home / 18,120-27,021

Finding the Third Proportional to 18,120 and 27,021

Calculator

Solution

The third proportional to 18,120 and 27,021 is: 40,294.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120 : 27,021 = 27,021 : x
  2. Step 2: Convert to fraction form
    18,120/27,021 = 27,021/x
  3. Step 3: Cross multiply
    18,120x = 27,021 × 27,021
  4. Step 4: Simplify right side
    18,120x = 730,134,441
  5. Step 5: Solve for x
    x = 730,134,441/18,120
  6. Step 6: Final answer
    x = 40,294.40

Related Problems

Find third proportional to 9,060 and 13,510.50
Half scale
Find third proportional to 36,240 and 54,042
Double scale
Find third proportional to 18,122 and 27,024
Similar ratio
Find third proportional to 27,180 and 40,531.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.