Finding the Fourth Proportional to 18,144,805.38, 27,212,908.42 and 5,190,556.64
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Solution
The fourth proportional to 18,144,805.38, 27,212,908.42 and 5,190,556.64 is: 7,784,604.99
Step by Step Solution
- Step 1: Write the proportion equation
18,144,805.38 : 27,212,908.42 = 5,190,556.64 : x - Step 2: Convert to fraction form
18,144,805.38/27,212,908.42 = 5,190,556.64/x - Step 3: Cross multiply
18,144,805.38x = 27,212,908.42 × 5,190,556.64 - Step 4: Simplify right side
18,144,805.38x = 141,250,142,493,142.91 - Step 5: Solve for x
x = 141,250,142,493,142.91/18,144,805.38 - Step 6: Final answer
x = 7,784,604.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.