Finding the Fourth Proportional to 10,992,391.20, 16,488,586.80 and 8,122,609.80
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Solution
The fourth proportional to 10,992,391.20, 16,488,586.80 and 8,122,609.80 is: 12,183,914.70
Step by Step Solution
- Step 1: Write the proportion equation
10,992,391.20 : 16,488,586.80 = 8,122,609.80 : x - Step 2: Convert to fraction form
10,992,391.20/16,488,586.80 = 8,122,609.80/x - Step 3: Cross multiply
10,992,391.20x = 16,488,586.80 × 8,122,609.80 - Step 4: Simplify right side
10,992,391.20x = 133,930,356,729,830.64 - Step 5: Solve for x
x = 133,930,356,729,830.64/10,992,391.20 - Step 6: Final answer
x = 12,183,914.70
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1.5x scale
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.