Home / 18,280-39,866

Finding the Third Proportional to 18,280 and 39,866

Calculator

Solution

The third proportional to 18,280 and 39,866 is: 86,941.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,280 : 39,866 = 39,866 : x
  2. Step 2: Convert to fraction form
    18,280/39,866 = 39,866/x
  3. Step 3: Cross multiply
    18,280x = 39,866 × 39,866
  4. Step 4: Simplify right side
    18,280x = 1,589,297,956
  5. Step 5: Solve for x
    x = 1,589,297,956/18,280
  6. Step 6: Final answer
    x = 86,941.90

Related Problems

Find third proportional to 9,140 and 19,933
Half scale
Find third proportional to 36,560 and 79,732
Double scale
Find third proportional to 18,282 and 39,870
Similar ratio
Find third proportional to 27,420 and 59,799
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.