Finding the Fourth Proportional to 12,972,982.26, 17,901,160.60 and 7,170,975.14
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Solution
The fourth proportional to 12,972,982.26, 17,901,160.60 and 7,170,975.14 is: 9,895,086.19
Step by Step Solution
- Step 1: Write the proportion equation
12,972,982.26 : 17,901,160.60 = 7,170,975.14 : x - Step 2: Convert to fraction form
12,972,982.26/17,901,160.60 = 7,170,975.14/x - Step 3: Cross multiply
12,972,982.26x = 17,901,160.60 × 7,170,975.14 - Step 4: Simplify right side
12,972,982.26x = 128,368,777,639,747.48 - Step 5: Solve for x
x = 128,368,777,639,747.48/12,972,982.26 - Step 6: Final answer
x = 9,895,086.19
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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.