Finding the Fourth Proportional to 10,921,625.20, 16,394,879.40 and 6,436,428.40
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Solution
The fourth proportional to 10,921,625.20, 16,394,879.40 and 6,436,428.40 is: 9,661,974.79
Step by Step Solution
- Step 1: Write the proportion equation
10,921,625.20 : 16,394,879.40 = 6,436,428.40 : x - Step 2: Convert to fraction form
10,921,625.20/16,394,879.40 = 6,436,428.40/x - Step 3: Cross multiply
10,921,625.20x = 16,394,879.40 × 6,436,428.40 - Step 4: Simplify right side
10,921,625.20x = 105,524,467,384,734.97 - Step 5: Solve for x
x = 105,524,467,384,734.97/10,921,625.20 - Step 6: Final answer
x = 9,661,974.79
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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.