Finding the Fourth Proportional to 20,385,687.24, 28,132,252.97 and 11,218,329.99
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Solution
The fourth proportional to 20,385,687.24, 28,132,252.97 and 11,218,329.99 is: 15,481,297.90
Step by Step Solution
- Step 1: Write the proportion equation
20,385,687.24 : 28,132,252.97 = 11,218,329.99 : x - Step 2: Convert to fraction form
20,385,687.24/28,132,252.97 = 11,218,329.99/x - Step 3: Cross multiply
20,385,687.24x = 28,132,252.97 × 11,218,329.99 - Step 4: Simplify right side
20,385,687.24x = 315,596,897,123,525.94 - Step 5: Solve for x
x = 315,596,897,123,525.94/20,385,687.24 - Step 6: Final answer
x = 15,481,297.90
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.