Finding the Fourth Proportional to 12,987,821.55, 19,476,250.68 and 3,891,211.92
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Solution
The fourth proportional to 12,987,821.55, 19,476,250.68 and 3,891,211.92 is: 5,835,175.55
Step by Step Solution
- Step 1: Write the proportion equation
12,987,821.55 : 19,476,250.68 = 3,891,211.92 : x - Step 2: Convert to fraction form
12,987,821.55/19,476,250.68 = 3,891,211.92/x - Step 3: Cross multiply
12,987,821.55x = 19,476,250.68 × 3,891,211.92 - Step 4: Simplify right side
12,987,821.55x = 75,786,218,802,924.11 - Step 5: Solve for x
x = 75,786,218,802,924.11/12,987,821.55 - Step 6: Final answer
x = 5,835,175.55
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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.