Finding the Third Proportional to 11,780 and 15,672
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Solution
The third proportional to 11,780 and 15,672 is: 20,849.88
Step by Step Solution
- Step 1: Write the proportion equation
11,780 : 15,672 = 15,672 : x - Step 2: Convert to fraction form
11,780/15,672 = 15,672/x - Step 3: Cross multiply
11,780x = 15,672 × 15,672 - Step 4: Simplify right side
11,780x = 245,611,584 - Step 5: Solve for x
x = 245,611,584/11,780 - Step 6: Final answer
x = 20,849.88
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Why These Related Problems?
These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.