Home / 12,900-29,178

Finding the Third Proportional to 12,900 and 29,178

Calculator

Solution

The third proportional to 12,900 and 29,178 is: 65,996.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900 : 29,178 = 29,178 : x
  2. Step 2: Convert to fraction form
    12,900/29,178 = 29,178/x
  3. Step 3: Cross multiply
    12,900x = 29,178 × 29,178
  4. Step 4: Simplify right side
    12,900x = 851,355,684
  5. Step 5: Solve for x
    x = 851,355,684/12,900
  6. Step 6: Final answer
    x = 65,996.56

Related Problems

Find third proportional to 6,450 and 14,589
Half scale
Find third proportional to 25,800 and 58,356
Double scale
Find third proportional to 12,902 and 29,183
Similar ratio
Find third proportional to 19,350 and 43,767
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.