Home / 18,642-40,828

Finding the Third Proportional to 18,642 and 40,828

Calculator

Solution

The third proportional to 18,642 and 40,828 is: 89,417.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642 : 40,828 = 40,828 : x
  2. Step 2: Convert to fraction form
    18,642/40,828 = 40,828/x
  3. Step 3: Cross multiply
    18,642x = 40,828 × 40,828
  4. Step 4: Simplify right side
    18,642x = 1,666,925,584
  5. Step 5: Solve for x
    x = 1,666,925,584/18,642
  6. Step 6: Final answer
    x = 89,417.74

Related Problems

Find third proportional to 9,321 and 20,414
Half scale
Find third proportional to 37,284 and 81,656
Double scale
Find third proportional to 18,644 and 40,832
Similar ratio
Find third proportional to 27,963 and 61,242
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.