Finding the Third Proportional to 12,306.75 and 18,939.75
Calculator
Solution
The third proportional to 12,306.75 and 18,939.75 is: 29,147.75
Step by Step Solution
- Step 1: Write the proportion equation
12,306.75 : 18,939.75 = 18,939.75 : x - Step 2: Convert to fraction form
12,306.75/18,939.75 = 18,939.75/x - Step 3: Cross multiply
12,306.75x = 18,939.75 × 18,939.75 - Step 4: Simplify right side
12,306.75x = 358,714,130.06 - Step 5: Solve for x
x = 358,714,130.06/12,306.75 - Step 6: Final answer
x = 29,147.75
Related Problems
Find third proportional to 6,153.38 and 9,469.88
Half scale
Find third proportional to 24,613.50 and 37,879.50
Double scale
Find third proportional to 12,309 and 18,943
Similar ratio
Find third proportional to 18,460.13 and 28,409.63
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.