Home / 18,684-40,284

Finding the Third Proportional to 18,684 and 40,284

Calculator

Solution

The third proportional to 18,684 and 40,284 is: 86,855.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684 : 40,284 = 40,284 : x
  2. Step 2: Convert to fraction form
    18,684/40,284 = 40,284/x
  3. Step 3: Cross multiply
    18,684x = 40,284 × 40,284
  4. Step 4: Simplify right side
    18,684x = 1,622,800,656
  5. Step 5: Solve for x
    x = 1,622,800,656/18,684
  6. Step 6: Final answer
    x = 86,855.10

Related Problems

Find third proportional to 9,342 and 20,142
Half scale
Find third proportional to 37,368 and 80,568
Double scale
Find third proportional to 18,686 and 40,288
Similar ratio
Find third proportional to 28,026 and 60,426
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.