Finding the Fourth Proportional to 21,288,452.69, 29,378,076.45 and 11,498,896.77
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Solution
The fourth proportional to 21,288,452.69, 29,378,076.45 and 11,498,896.77 is: 15,868,483.89
Step by Step Solution
- Step 1: Write the proportion equation
21,288,452.69 : 29,378,076.45 = 11,498,896.77 : x - Step 2: Convert to fraction form
21,288,452.69/29,378,076.45 = 11,498,896.77/x - Step 3: Cross multiply
21,288,452.69x = 29,378,076.45 × 11,498,896.77 - Step 4: Simplify right side
21,288,452.69x = 337,815,468,399,718.06 - Step 5: Solve for x
x = 337,815,468,399,718.06/21,288,452.69 - Step 6: Final answer
x = 15,868,483.89
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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.