Finding the Fourth Proportional to 18,453,907.70, 27,680,861.55 and 7,667,623.70
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Solution
The fourth proportional to 18,453,907.70, 27,680,861.55 and 7,667,623.70 is: 11,501,435.55
Step by Step Solution
- Step 1: Write the proportion equation
18,453,907.70 : 27,680,861.55 = 7,667,623.70 : x - Step 2: Convert to fraction form
18,453,907.70/27,680,861.55 = 7,667,623.70/x - Step 3: Cross multiply
18,453,907.70x = 27,680,861.55 × 7,667,623.70 - Step 4: Simplify right side
18,453,907.70x = 212,246,430,057,198.75 - Step 5: Solve for x
x = 212,246,430,057,198.75/18,453,907.70 - Step 6: Final answer
x = 11,501,435.55
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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.