Finding the Fourth Proportional to 20,976,861.97, 31,467,138.27 and 6,407,070.72
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Solution
The fourth proportional to 20,976,861.97, 31,467,138.27 and 6,407,070.72 is: 9,611,169.70
Step by Step Solution
- Step 1: Write the proportion equation
20,976,861.97 : 31,467,138.27 = 6,407,070.72 : x - Step 2: Convert to fraction form
20,976,861.97/31,467,138.27 = 6,407,070.72/x - Step 3: Cross multiply
20,976,861.97x = 31,467,138.27 × 6,407,070.72 - Step 4: Simplify right side
20,976,861.97x = 201,612,180,251,908.44 - Step 5: Solve for x
x = 201,612,180,251,908.44/20,976,861.97 - Step 6: Final answer
x = 9,611,169.70
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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.