Finding the Third Proportional to 7,138.13 and 15,381.14
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Solution
The third proportional to 7,138.13 and 15,381.14 is: 33,143.09
Step by Step Solution
- Step 1: Write the proportion equation
7,138.13 : 15,381.14 = 15,381.14 : x - Step 2: Convert to fraction form
7,138.13/15,381.14 = 15,381.14/x - Step 3: Cross multiply
7,138.13x = 15,381.14 × 15,381.14 - Step 4: Simplify right side
7,138.13x = 236,579,486.93 - Step 5: Solve for x
x = 236,579,486.93/7,138.13 - Step 6: Final answer
x = 33,143.09
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Why These Related Problems?
These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.