Finding the Fourth Proportional to 20,674,682.67, 28,530,540.62 and 11,382,159.97
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Solution
The fourth proportional to 20,674,682.67, 28,530,540.62 and 11,382,159.97 is: 15,707,093.67
Step by Step Solution
- Step 1: Write the proportion equation
20,674,682.67 : 28,530,540.62 = 11,382,159.97 : x - Step 2: Convert to fraction form
20,674,682.67/28,530,540.62 = 11,382,159.97/x - Step 3: Cross multiply
20,674,682.67x = 28,530,540.62 × 11,382,159.97 - Step 4: Simplify right side
20,674,682.67x = 324,739,177,367,423 - Step 5: Solve for x
x = 324,739,177,367,423/20,674,682.67 - Step 6: Final answer
x = 15,707,093.67
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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.