Finding the Fourth Proportional to 20,727,907.21, 31,095,845.97 and 7,947,415.09
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Solution
The fourth proportional to 20,727,907.21, 31,095,845.97 and 7,947,415.09 is: 11,922,650.61
Step by Step Solution
- Step 1: Write the proportion equation
20,727,907.21 : 31,095,845.97 = 7,947,415.09 : x - Step 2: Convert to fraction form
20,727,907.21/31,095,845.97 = 7,947,415.09/x - Step 3: Cross multiply
20,727,907.21x = 31,095,845.97 × 7,947,415.09 - Step 4: Simplify right side
20,727,907.21x = 247,131,595,498,293.69 - Step 5: Solve for x
x = 247,131,595,498,293.69/20,727,907.21 - Step 6: Final answer
x = 11,922,650.61
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.