Home / 18,378-39,707

Finding the Third Proportional to 18,378 and 39,707

Calculator

Solution

The third proportional to 18,378 and 39,707 is: 85,789.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378 : 39,707 = 39,707 : x
  2. Step 2: Convert to fraction form
    18,378/39,707 = 39,707/x
  3. Step 3: Cross multiply
    18,378x = 39,707 × 39,707
  4. Step 4: Simplify right side
    18,378x = 1,576,645,849
  5. Step 5: Solve for x
    x = 1,576,645,849/18,378
  6. Step 6: Final answer
    x = 85,789.85

Related Problems

Find third proportional to 9,189 and 19,853.50
Half scale
Find third proportional to 36,756 and 79,414
Double scale
Find third proportional to 18,380 and 39,711
Similar ratio
Find third proportional to 27,567 and 59,560.50
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.