Finding the Fourth Proportional to 13,171,912.81, 18,176,361.69 and 7,291,149.09
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Solution
The fourth proportional to 13,171,912.81, 18,176,361.69 and 7,291,149.09 is: 10,061,299.74
Step by Step Solution
- Step 1: Write the proportion equation
13,171,912.81 : 18,176,361.69 = 7,291,149.09 : x - Step 2: Convert to fraction form
13,171,912.81/18,176,361.69 = 7,291,149.09/x - Step 3: Cross multiply
13,171,912.81x = 18,176,361.69 × 7,291,149.09 - Step 4: Simplify right side
13,171,912.81x = 132,526,562,923,966.16 - Step 5: Solve for x
x = 132,526,562,923,966.16/13,171,912.81 - Step 6: Final answer
x = 10,061,299.74
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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.