Finding the Fourth Proportional to 18,021,722.81, 27,033,845.14 and 8,921,376.96
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Solution
The fourth proportional to 18,021,722.81, 27,033,845.14 and 8,921,376.96 is: 13,382,689.64
Step by Step Solution
- Step 1: Write the proportion equation
18,021,722.81 : 27,033,845.14 = 8,921,376.96 : x - Step 2: Convert to fraction form
18,021,722.81/27,033,845.14 = 8,921,376.96/x - Step 3: Cross multiply
18,021,722.81x = 27,033,845.14 × 8,921,376.96 - Step 4: Simplify right side
18,021,722.81x = 241,179,123,081,978.78 - Step 5: Solve for x
x = 241,179,123,081,978.78/18,021,722.81 - Step 6: Final answer
x = 13,382,689.64
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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.