Finding the Fourth Proportional to 20,146,235.94, 27,738,060.36 and 18,305,183.70
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Solution
The fourth proportional to 20,146,235.94, 27,738,060.36 and 18,305,183.70 is: 25,203,233.59
Step by Step Solution
- Step 1: Write the proportion equation
20,146,235.94 : 27,738,060.36 = 18,305,183.70 : x - Step 2: Convert to fraction form
20,146,235.94/27,738,060.36 = 18,305,183.70/x - Step 3: Cross multiply
20,146,235.94x = 27,738,060.36 × 18,305,183.70 - Step 4: Simplify right side
20,146,235.94x = 507,750,290,371,488.12 - Step 5: Solve for x
x = 507,750,290,371,488.12/20,146,235.94 - Step 6: Final answer
x = 25,203,233.59
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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.