Home / 15,331-21,112

Finding the Third Proportional to 15,331 and 21,112

Calculator

Solution

The third proportional to 15,331 and 21,112 is: 29,072.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,331 : 21,112 = 21,112 : x
  2. Step 2: Convert to fraction form
    15,331/21,112 = 21,112/x
  3. Step 3: Cross multiply
    15,331x = 21,112 × 21,112
  4. Step 4: Simplify right side
    15,331x = 445,716,544
  5. Step 5: Solve for x
    x = 445,716,544/15,331
  6. Step 6: Final answer
    x = 29,072.89

Related Problems

Find third proportional to 7,665.50 and 10,556
Half scale
Find third proportional to 30,662 and 42,224
Double scale
Find third proportional to 15,333 and 21,115
Similar ratio
Find third proportional to 22,996.50 and 31,668
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.