Finding the Fourth Proportional to 20,618,217.06, 28,453,205.79 and 11,450,859.54
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Solution
The fourth proportional to 20,618,217.06, 28,453,205.79 and 11,450,859.54 is: 15,802,222.96
Step by Step Solution
- Step 1: Write the proportion equation
20,618,217.06 : 28,453,205.79 = 11,450,859.54 : x - Step 2: Convert to fraction form
20,618,217.06/28,453,205.79 = 11,450,859.54/x - Step 3: Cross multiply
20,618,217.06x = 28,453,205.79 × 11,450,859.54 - Step 4: Simplify right side
20,618,217.06x = 325,813,662,964,004.69 - Step 5: Solve for x
x = 325,813,662,964,004.69/20,618,217.06 - Step 6: Final answer
x = 15,802,222.96
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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.