Finding the Fourth Proportional to 13,634,163.54, 18,821,963.79 and 8,479,185.84
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Solution
The fourth proportional to 13,634,163.54, 18,821,963.79 and 8,479,185.84 is: 11,705,516.69
Step by Step Solution
- Step 1: Write the proportion equation
13,634,163.54 : 18,821,963.79 = 8,479,185.84 : x - Step 2: Convert to fraction form
13,634,163.54/18,821,963.79 = 8,479,185.84/x - Step 3: Cross multiply
13,634,163.54x = 18,821,963.79 × 8,479,185.84 - Step 4: Simplify right side
13,634,163.54x = 159,594,928,849,160.72 - Step 5: Solve for x
x = 159,594,928,849,160.72/13,634,163.54 - Step 6: Final answer
x = 11,705,516.69
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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.