Finding the Fourth Proportional to 20,278,245.24, 27,985,099.05 and 11,579,212.17
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Solution
The fourth proportional to 20,278,245.24, 27,985,099.05 and 11,579,212.17 is: 15,979,952.69
Step by Step Solution
- Step 1: Write the proportion equation
20,278,245.24 : 27,985,099.05 = 11,579,212.17 : x - Step 2: Convert to fraction form
20,278,245.24/27,985,099.05 = 11,579,212.17/x - Step 3: Cross multiply
20,278,245.24x = 27,985,099.05 × 11,579,212.17 - Step 4: Simplify right side
20,278,245.24x = 324,045,399,498,415.44 - Step 5: Solve for x
x = 324,045,399,498,415.44/20,278,245.24 - Step 6: Final answer
x = 15,979,952.69
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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.