Home / 20,138-38,440

Finding the Third Proportional to 20,138 and 38,440

Calculator

Solution

The third proportional to 20,138 and 38,440 is: 73,375.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,138 : 38,440 = 38,440 : x
  2. Step 2: Convert to fraction form
    20,138/38,440 = 38,440/x
  3. Step 3: Cross multiply
    20,138x = 38,440 × 38,440
  4. Step 4: Simplify right side
    20,138x = 1,477,633,600
  5. Step 5: Solve for x
    x = 1,477,633,600/20,138
  6. Step 6: Final answer
    x = 73,375.39

Related Problems

Find third proportional to 10,069 and 19,220
Half scale
Find third proportional to 40,276 and 76,880
Double scale
Find third proportional to 20,140 and 38,444
Similar ratio
Find third proportional to 30,207 and 57,660
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.91) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.