Finding the Fourth Proportional to 13,202,915.51, 18,219,751.97 and 7,321,600.62
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Solution
The fourth proportional to 13,202,915.51, 18,219,751.97 and 7,321,600.62 is: 10,103,658.33
Step by Step Solution
- Step 1: Write the proportion equation
13,202,915.51 : 18,219,751.97 = 7,321,600.62 : x - Step 2: Convert to fraction form
13,202,915.51/18,219,751.97 = 7,321,600.62/x - Step 3: Cross multiply
13,202,915.51x = 18,219,751.97 × 7,321,600.62 - Step 4: Simplify right side
13,202,915.51x = 133,397,747,283,190.22 - Step 5: Solve for x
x = 133,397,747,283,190.22/13,202,915.51 - Step 6: Final answer
x = 10,103,658.33
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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.