Home / 18,905-41,428

Finding the Third Proportional to 18,905 and 41,428

Calculator

Solution

The third proportional to 18,905 and 41,428 is: 90,784.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,905 : 41,428 = 41,428 : x
  2. Step 2: Convert to fraction form
    18,905/41,428 = 41,428/x
  3. Step 3: Cross multiply
    18,905x = 41,428 × 41,428
  4. Step 4: Simplify right side
    18,905x = 1,716,279,184
  5. Step 5: Solve for x
    x = 1,716,279,184/18,905
  6. Step 6: Final answer
    x = 90,784.41

Related Problems

Find third proportional to 9,452.50 and 20,714
Half scale
Find third proportional to 37,810 and 82,856
Double scale
Find third proportional to 18,907 and 41,432
Similar ratio
Find third proportional to 28,357.50 and 62,142
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.