Finding the Third Proportional to 20,418 and 31,357
Calculator
Solution
The third proportional to 20,418 and 31,357 is: 48,156.60
Step by Step Solution
- Step 1: Write the proportion equation
20,418 : 31,357 = 31,357 : x - Step 2: Convert to fraction form
20,418/31,357 = 31,357/x - Step 3: Cross multiply
20,418x = 31,357 × 31,357 - Step 4: Simplify right side
20,418x = 983,261,449 - Step 5: Solve for x
x = 983,261,449/20,418 - Step 6: Final answer
x = 48,156.60
Related Problems
Find third proportional to 10,209 and 15,678.50
Half scale
Find third proportional to 40,836 and 62,714
Double scale
Find third proportional to 20,420 and 31,360
Similar ratio
Find third proportional to 30,627 and 47,035.50
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.