Finding the Fourth Proportional to 20,228,446.80, 27,909,874.34 and 11,526,433.92
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Solution
The fourth proportional to 20,228,446.80, 27,909,874.34 and 11,526,433.92 is: 15,903,411.94
Step by Step Solution
- Step 1: Write the proportion equation
20,228,446.80 : 27,909,874.34 = 11,526,433.92 : x - Step 2: Convert to fraction form
20,228,446.80/27,909,874.34 = 11,526,433.92/x - Step 3: Cross multiply
20,228,446.80x = 27,909,874.34 × 11,526,433.92 - Step 4: Simplify right side
20,228,446.80x = 321,701,322,295,513.62 - Step 5: Solve for x
x = 321,701,322,295,513.62/20,228,446.80 - Step 6: Final answer
x = 15,903,411.94
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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.