Finding the Fourth Proportional to 21,288,464.79, 29,378,093.20 and 11,498,908.93
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Solution
The fourth proportional to 21,288,464.79, 29,378,093.20 and 11,498,908.93 is: 15,868,500.69
Step by Step Solution
- Step 1: Write the proportion equation
21,288,464.79 : 29,378,093.20 = 11,498,908.93 : x - Step 2: Convert to fraction form
21,288,464.79/29,378,093.20 = 11,498,908.93/x - Step 3: Cross multiply
21,288,464.79x = 29,378,093.20 × 11,498,908.93 - Step 4: Simplify right side
21,288,464.79x = 337,816,018,243,852.25 - Step 5: Solve for x
x = 337,816,018,243,852.25/21,288,464.79 - Step 6: Final answer
x = 15,868,500.69
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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.