Finding the Fourth Proportional to 12,265,872.96, 18,378,469.68 and 7,459,021.92
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Solution
The fourth proportional to 12,265,872.96, 18,378,469.68 and 7,459,021.92 is: 11,176,164.03
Step by Step Solution
- Step 1: Write the proportion equation
12,265,872.96 : 18,378,469.68 = 7,459,021.92 : x - Step 2: Convert to fraction form
12,265,872.96/18,378,469.68 = 7,459,021.92/x - Step 3: Cross multiply
12,265,872.96x = 18,378,469.68 × 7,459,021.92 - Step 4: Simplify right side
12,265,872.96x = 137,085,408,199,175.38 - Step 5: Solve for x
x = 137,085,408,199,175.38/12,265,872.96 - Step 6: Final answer
x = 11,176,164.03
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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.