Home / 15,642-18,396

Finding the Third Proportional to 15,642 and 18,396

Calculator

Solution

The third proportional to 15,642 and 18,396 is: 21,634.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,642 : 18,396 = 18,396 : x
  2. Step 2: Convert to fraction form
    15,642/18,396 = 18,396/x
  3. Step 3: Cross multiply
    15,642x = 18,396 × 18,396
  4. Step 4: Simplify right side
    15,642x = 338,412,816
  5. Step 5: Solve for x
    x = 338,412,816/15,642
  6. Step 6: Final answer
    x = 21,634.88

Related Problems

Find third proportional to 7,821 and 9,198
Half scale
Find third proportional to 31,284 and 36,792
Double scale
Find third proportional to 15,644 and 18,398
Similar ratio
Find third proportional to 23,463 and 27,594
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.