Home / 18,618-40,212

Finding the Third Proportional to 18,618 and 40,212

Calculator

Solution

The third proportional to 18,618 and 40,212 is: 86,851.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,618 : 40,212 = 40,212 : x
  2. Step 2: Convert to fraction form
    18,618/40,212 = 40,212/x
  3. Step 3: Cross multiply
    18,618x = 40,212 × 40,212
  4. Step 4: Simplify right side
    18,618x = 1,617,004,944
  5. Step 5: Solve for x
    x = 1,617,004,944/18,618
  6. Step 6: Final answer
    x = 86,851.70

Related Problems

Find third proportional to 9,309 and 20,106
Half scale
Find third proportional to 37,236 and 80,424
Double scale
Find third proportional to 18,620 and 40,216
Similar ratio
Find third proportional to 27,927 and 60,318
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.