Finding the Fourth Proportional to 20,757,846.88, 28,645,657.66 and 11,338,645.65
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Solution
The fourth proportional to 20,757,846.88, 28,645,657.66 and 11,338,645.65 is: 15,647,237.57
Step by Step Solution
- Step 1: Write the proportion equation
20,757,846.88 : 28,645,657.66 = 11,338,645.65 : x - Step 2: Convert to fraction form
20,757,846.88/28,645,657.66 = 11,338,645.65/x - Step 3: Cross multiply
20,757,846.88x = 28,645,657.66 × 11,338,645.65 - Step 4: Simplify right side
20,757,846.88x = 324,802,961,617,948.19 - Step 5: Solve for x
x = 324,802,961,617,948.19/20,757,846.88 - Step 6: Final answer
x = 15,647,237.57
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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.