Home / 18,486-39,429

Finding the Third Proportional to 18,486 and 39,429

Calculator

Solution

The third proportional to 18,486 and 39,429 is: 84,098.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486 : 39,429 = 39,429 : x
  2. Step 2: Convert to fraction form
    18,486/39,429 = 39,429/x
  3. Step 3: Cross multiply
    18,486x = 39,429 × 39,429
  4. Step 4: Simplify right side
    18,486x = 1,554,646,041
  5. Step 5: Solve for x
    x = 1,554,646,041/18,486
  6. Step 6: Final answer
    x = 84,098.56

Related Problems

Find third proportional to 9,243 and 19,714.50
Half scale
Find third proportional to 36,972 and 78,858
Double scale
Find third proportional to 18,488 and 39,433
Similar ratio
Find third proportional to 27,729 and 59,143.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.