Finding the Fourth Proportional to 13,745,897.92, 18,968,805.12 and 7,634,713.60
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Solution
The fourth proportional to 13,745,897.92, 18,968,805.12 and 7,634,713.60 is: 10,535,608.17
Step by Step Solution
- Step 1: Write the proportion equation
13,745,897.92 : 18,968,805.12 = 7,634,713.60 : x - Step 2: Convert to fraction form
13,745,897.92/18,968,805.12 = 7,634,713.60/x - Step 3: Cross multiply
13,745,897.92x = 18,968,805.12 × 7,634,713.60 - Step 4: Simplify right side
13,745,897.92x = 144,821,394,425,413.62 - Step 5: Solve for x
x = 144,821,394,425,413.62/13,745,897.92 - Step 6: Final answer
x = 10,535,608.17
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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.