Finding the Fourth Proportional to 12,790,905.36, 17,651,413.30 and 6,989,723.84
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Solution
The fourth proportional to 12,790,905.36, 17,651,413.30 and 6,989,723.84 is: 9,645,799.17
Step by Step Solution
- Step 1: Write the proportion equation
12,790,905.36 : 17,651,413.30 = 6,989,723.84 : x - Step 2: Convert to fraction form
12,790,905.36/17,651,413.30 = 6,989,723.84/x - Step 3: Cross multiply
12,790,905.36x = 17,651,413.30 × 6,989,723.84 - Step 4: Simplify right side
12,790,905.36x = 123,378,504,352,703.08 - Step 5: Solve for x
x = 123,378,504,352,703.08/12,790,905.36 - Step 6: Final answer
x = 9,645,799.17
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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.