Finding the Fourth Proportional to 21,991,310.20, 32,986,965.30 and 18,590,087.80
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Solution
The fourth proportional to 21,991,310.20, 32,986,965.30 and 18,590,087.80 is: 27,885,131.70
Step by Step Solution
- Step 1: Write the proportion equation
21,991,310.20 : 32,986,965.30 = 18,590,087.80 : x - Step 2: Convert to fraction form
21,991,310.20/32,986,965.30 = 18,590,087.80/x - Step 3: Cross multiply
21,991,310.20x = 32,986,965.30 × 18,590,087.80 - Step 4: Simplify right side
21,991,310.20x = 613,230,581,182,553.38 - Step 5: Solve for x
x = 613,230,581,182,553.38/21,991,310.20 - Step 6: Final answer
x = 27,885,131.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.