Finding the Fourth Proportional to 11,102,701.92, 15,325,956.72 and 7,236,163.68
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Solution
The fourth proportional to 11,102,701.92, 15,325,956.72 and 7,236,163.68 is: 9,988,661.51
Step by Step Solution
- Step 1: Write the proportion equation
11,102,701.92 : 15,325,956.72 = 7,236,163.68 : x - Step 2: Convert to fraction form
11,102,701.92/15,325,956.72 = 7,236,163.68/x - Step 3: Cross multiply
11,102,701.92x = 15,325,956.72 × 7,236,163.68 - Step 4: Simplify right side
11,102,701.92x = 110,901,131,378,515.94 - Step 5: Solve for x
x = 110,901,131,378,515.94/11,102,701.92 - Step 6: Final answer
x = 9,988,661.51
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.