Finding the Fourth Proportional to 12,662,578.15, 18,993,874.61 and 8,892,889.99
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Solution
The fourth proportional to 12,662,578.15, 18,993,874.61 and 8,892,889.99 is: 13,339,340.17
Step by Step Solution
- Step 1: Write the proportion equation
12,662,578.15 : 18,993,874.61 = 8,892,889.99 : x - Step 2: Convert to fraction form
12,662,578.15/18,993,874.61 = 8,892,889.99/x - Step 3: Cross multiply
12,662,578.15x = 18,993,874.61 × 8,892,889.99 - Step 4: Simplify right side
12,662,578.15x = 168,910,437,365,331.72 - Step 5: Solve for x
x = 168,910,437,365,331.72/12,662,578.15 - Step 6: Final answer
x = 13,339,340.17
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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.