Finding the Fourth Proportional to 13,347,481.05, 18,419,668.97 and 7,841,087.98
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Solution
The fourth proportional to 13,347,481.05, 18,419,668.97 and 7,841,087.98 is: 10,820,786.66
Step by Step Solution
- Step 1: Write the proportion equation
13,347,481.05 : 18,419,668.97 = 7,841,087.98 : x - Step 2: Convert to fraction form
13,347,481.05/18,419,668.97 = 7,841,087.98/x - Step 3: Cross multiply
13,347,481.05x = 18,419,668.97 × 7,841,087.98 - Step 4: Simplify right side
13,347,481.05x = 144,430,244,870,991.38 - Step 5: Solve for x
x = 144,430,244,870,991.38/13,347,481.05 - Step 6: Final answer
x = 10,820,786.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.