Finding the Fourth Proportional to 21,598,230.87, 29,805,612.21 and 11,809,306.74
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Solution
The fourth proportional to 21,598,230.87, 29,805,612.21 and 11,809,306.74 is: 16,296,872.61
Step by Step Solution
- Step 1: Write the proportion equation
21,598,230.87 : 29,805,612.21 = 11,809,306.74 : x - Step 2: Convert to fraction form
21,598,230.87/29,805,612.21 = 11,809,306.74/x - Step 3: Cross multiply
21,598,230.87x = 29,805,612.21 × 11,809,306.74 - Step 4: Simplify right side
21,598,230.87x = 351,983,617,161,379.31 - Step 5: Solve for x
x = 351,983,617,161,379.31/21,598,230.87 - Step 6: Final answer
x = 16,296,872.61
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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.