Finding the Fourth Proportional to 18,630,893.96, 25,705,470.66 and 11,186,622.44
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Solution
The fourth proportional to 18,630,893.96, 25,705,470.66 and 11,186,622.44 is: 15,434,438.92
Step by Step Solution
- Step 1: Write the proportion equation
18,630,893.96 : 25,705,470.66 = 11,186,622.44 : x - Step 2: Convert to fraction form
18,630,893.96/25,705,470.66 = 11,186,622.44/x - Step 3: Cross multiply
18,630,893.96x = 25,705,470.66 × 11,186,622.44 - Step 4: Simplify right side
18,630,893.96x = 287,557,394,915,917.62 - Step 5: Solve for x
x = 287,557,394,915,917.62/18,630,893.96 - Step 6: Final answer
x = 15,434,438.92
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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.