Finding the Fourth Proportional to 18,190,369.20, 27,285,553.80 and 8,624,431.20
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Solution
The fourth proportional to 18,190,369.20, 27,285,553.80 and 8,624,431.20 is: 12,936,646.80
Step by Step Solution
- Step 1: Write the proportion equation
18,190,369.20 : 27,285,553.80 = 8,624,431.20 : x - Step 2: Convert to fraction form
18,190,369.20/27,285,553.80 = 8,624,431.20/x - Step 3: Cross multiply
18,190,369.20x = 27,285,553.80 × 8,624,431.20 - Step 4: Simplify right side
18,190,369.20x = 235,322,381,501,998.53 - Step 5: Solve for x
x = 235,322,381,501,998.53/18,190,369.20 - Step 6: Final answer
x = 12,936,646.80
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Similar ratio
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1.5x scale
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.