Finding the Fourth Proportional to 21,729,906.48, 29,987,262.84 and 11,940,981.36
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Solution
The fourth proportional to 21,729,906.48, 29,987,262.84 and 11,940,981.36 is: 16,478,549.82
Step by Step Solution
- Step 1: Write the proportion equation
21,729,906.48 : 29,987,262.84 = 11,940,981.36 : x - Step 2: Convert to fraction form
21,729,906.48/29,987,262.84 = 11,940,981.36/x - Step 3: Cross multiply
21,729,906.48x = 29,987,262.84 × 11,940,981.36 - Step 4: Simplify right side
21,729,906.48x = 358,077,346,609,860.62 - Step 5: Solve for x
x = 358,077,346,609,860.62/21,729,906.48 - Step 6: Final answer
x = 16,478,549.82
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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.