Home / 17,920-39,288

Finding the Third Proportional to 17,920 and 39,288

Calculator

Solution

The third proportional to 17,920 and 39,288 is: 86,135.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,920 : 39,288 = 39,288 : x
  2. Step 2: Convert to fraction form
    17,920/39,288 = 39,288/x
  3. Step 3: Cross multiply
    17,920x = 39,288 × 39,288
  4. Step 4: Simplify right side
    17,920x = 1,543,546,944
  5. Step 5: Solve for x
    x = 1,543,546,944/17,920
  6. Step 6: Final answer
    x = 86,135.43

Related Problems

Find third proportional to 8,960 and 19,644
Half scale
Find third proportional to 35,840 and 78,576
Double scale
Find third proportional to 17,922 and 39,292
Similar ratio
Find third proportional to 26,880 and 58,932
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.