Finding the Fourth Proportional to 8,138,830.20, 12,208,245.30 and 7,674,343.80
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Solution
The fourth proportional to 8,138,830.20, 12,208,245.30 and 7,674,343.80 is: 11,511,515.70
Step by Step Solution
- Step 1: Write the proportion equation
8,138,830.20 : 12,208,245.30 = 7,674,343.80 : x - Step 2: Convert to fraction form
8,138,830.20/12,208,245.30 = 7,674,343.80/x - Step 3: Cross multiply
8,138,830.20x = 12,208,245.30 × 7,674,343.80 - Step 4: Simplify right side
8,138,830.20x = 93,690,271,626,934.14 - Step 5: Solve for x
x = 93,690,271,626,934.14/8,138,830.20 - Step 6: Final answer
x = 11,511,515.70
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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.