Home / 18,670-39,069

Finding the Third Proportional to 18,670 and 39,069

Calculator

Solution

The third proportional to 18,670 and 39,069 is: 81,756.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,670 : 39,069 = 39,069 : x
  2. Step 2: Convert to fraction form
    18,670/39,069 = 39,069/x
  3. Step 3: Cross multiply
    18,670x = 39,069 × 39,069
  4. Step 4: Simplify right side
    18,670x = 1,526,386,761
  5. Step 5: Solve for x
    x = 1,526,386,761/18,670
  6. Step 6: Final answer
    x = 81,756.12

Related Problems

Find third proportional to 9,335 and 19,534.50
Half scale
Find third proportional to 37,340 and 78,138
Double scale
Find third proportional to 18,672 and 39,073
Similar ratio
Find third proportional to 28,005 and 58,603.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.