Home / 21,186-31,131

Finding the Third Proportional to 21,186 and 31,131

Calculator

Solution

The third proportional to 21,186 and 31,131 is: 45,744.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186 : 31,131 = 31,131 : x
  2. Step 2: Convert to fraction form
    21,186/31,131 = 31,131/x
  3. Step 3: Cross multiply
    21,186x = 31,131 × 31,131
  4. Step 4: Simplify right side
    21,186x = 969,139,161
  5. Step 5: Solve for x
    x = 969,139,161/21,186
  6. Step 6: Final answer
    x = 45,744.32

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.