Finding the Fourth Proportional to 21,580,497.99, 29,780,739.67 and 11,790,732.15
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Solution
The fourth proportional to 21,580,497.99, 29,780,739.67 and 11,790,732.15 is: 16,271,020.48
Step by Step Solution
- Step 1: Write the proportion equation
21,580,497.99 : 29,780,739.67 = 11,790,732.15 : x - Step 2: Convert to fraction form
21,580,497.99/29,780,739.67 = 11,790,732.15/x - Step 3: Cross multiply
21,580,497.99x = 29,780,739.67 × 11,790,732.15 - Step 4: Simplify right side
21,580,497.99x = 351,136,724,677,849.44 - Step 5: Solve for x
x = 351,136,724,677,849.44/21,580,497.99 - Step 6: Final answer
x = 16,271,020.48
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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.