Finding the Fourth Proportional to 18,678,608.70, 27,991,576.09 and 8,820,153.37
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Solution
The fourth proportional to 18,678,608.70, 27,991,576.09 and 8,820,153.37 is: 13,217,793.58
Step by Step Solution
- Step 1: Write the proportion equation
18,678,608.70 : 27,991,576.09 = 8,820,153.37 : x - Step 2: Convert to fraction form
18,678,608.70/27,991,576.09 = 8,820,153.37/x - Step 3: Cross multiply
18,678,608.70x = 27,991,576.09 × 8,820,153.37 - Step 4: Simplify right side
18,678,608.70x = 246,889,994,181,824.91 - Step 5: Solve for x
x = 246,889,994,181,824.91/18,678,608.70 - Step 6: Final answer
x = 13,217,793.58
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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.