Finding the Third Proportional to 21,186 and 31,131
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Solution
The third proportional to 21,186 and 31,131 is: 45,744.32
Step by Step Solution
- Step 1: Write the proportion equation
21,186 : 31,131 = 31,131 : x - Step 2: Convert to fraction form
21,186/31,131 = 31,131/x - Step 3: Cross multiply
21,186x = 31,131 × 31,131 - Step 4: Simplify right side
21,186x = 969,139,161 - Step 5: Solve for x
x = 969,139,161/21,186 - Step 6: Final answer
x = 45,744.32
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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.