Finding the Fourth Proportional to 21,562,671.49, 29,752,976.97 and 12,740,896.15
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Solution
The fourth proportional to 21,562,671.49, 29,752,976.97 and 12,740,896.15 is: 17,580,362.89
Step by Step Solution
- Step 1: Write the proportion equation
21,562,671.49 : 29,752,976.97 = 12,740,896.15 : x - Step 2: Convert to fraction form
21,562,671.49/29,752,976.97 = 12,740,896.15/x - Step 3: Cross multiply
21,562,671.49x = 29,752,976.97 × 12,740,896.15 - Step 4: Simplify right side
21,562,671.49x = 379,079,589,653,729.25 - Step 5: Solve for x
x = 379,079,589,653,729.25/21,562,671.49 - Step 6: Final answer
x = 17,580,362.89
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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.