Home / 20,138-31,119

Finding the Third Proportional to 20,138 and 31,119

Calculator

Solution

The third proportional to 20,138 and 31,119 is: 48,087.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,138 : 31,119 = 31,119 : x
  2. Step 2: Convert to fraction form
    20,138/31,119 = 31,119/x
  3. Step 3: Cross multiply
    20,138x = 31,119 × 31,119
  4. Step 4: Simplify right side
    20,138x = 968,392,161
  5. Step 5: Solve for x
    x = 968,392,161/20,138
  6. Step 6: Final answer
    x = 48,087.80

Related Problems

Find third proportional to 10,069 and 15,559.50
Half scale
Find third proportional to 40,276 and 62,238
Double scale
Find third proportional to 20,140 and 31,122
Similar ratio
Find third proportional to 30,207 and 46,678.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.