Finding the Fourth Proportional to 18,486,205.16, 25,502,366.43 and 11,961,940.68
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Solution
The fourth proportional to 18,486,205.16, 25,502,366.43 and 11,961,940.68 is: 16,501,915.45
Step by Step Solution
- Step 1: Write the proportion equation
18,486,205.16 : 25,502,366.43 = 11,961,940.68 : x - Step 2: Convert to fraction form
18,486,205.16/25,502,366.43 = 11,961,940.68/x - Step 3: Cross multiply
18,486,205.16x = 25,502,366.43 × 11,961,940.68 - Step 4: Simplify right side
18,486,205.16x = 305,057,794,435,283.38 - Step 5: Solve for x
x = 305,057,794,435,283.38/18,486,205.16 - Step 6: Final answer
x = 16,501,915.45
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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.