Home / 15,628-18,382

Finding the Third Proportional to 15,628 and 18,382

Calculator

Solution

The third proportional to 15,628 and 18,382 is: 21,621.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,628 : 18,382 = 18,382 : x
  2. Step 2: Convert to fraction form
    15,628/18,382 = 18,382/x
  3. Step 3: Cross multiply
    15,628x = 18,382 × 18,382
  4. Step 4: Simplify right side
    15,628x = 337,897,924
  5. Step 5: Solve for x
    x = 337,897,924/15,628
  6. Step 6: Final answer
    x = 21,621.32

Related Problems

Find third proportional to 7,814 and 9,191
Half scale
Find third proportional to 31,256 and 36,764
Double scale
Find third proportional to 15,630 and 18,384
Similar ratio
Find third proportional to 23,442 and 27,573
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.