Finding the Fourth Proportional to 21,680,074.97, 29,915,745.60 and 12,388,245.98
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Solution
The fourth proportional to 21,680,074.97, 29,915,745.60 and 12,388,245.98 is: 17,094,203.58
Step by Step Solution
- Step 1: Write the proportion equation
21,680,074.97 : 29,915,745.60 = 12,388,245.98 : x - Step 2: Convert to fraction form
21,680,074.97/29,915,745.60 = 12,388,245.98/x - Step 3: Cross multiply
21,680,074.97x = 29,915,745.60 × 12,388,245.98 - Step 4: Simplify right side
21,680,074.97x = 370,603,615,167,902.75 - Step 5: Solve for x
x = 370,603,615,167,902.75/21,680,074.97 - Step 6: Final answer
x = 17,094,203.58
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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.