Finding the Fourth Proportional to 12,138,631.65, 18,207,947.48 and 3,163,183.65
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Solution
The fourth proportional to 12,138,631.65, 18,207,947.48 and 3,163,183.65 is: 4,744,775.48
Step by Step Solution
- Step 1: Write the proportion equation
12,138,631.65 : 18,207,947.48 = 3,163,183.65 : x - Step 2: Convert to fraction form
12,138,631.65/18,207,947.48 = 3,163,183.65/x - Step 3: Cross multiply
12,138,631.65x = 18,207,947.48 × 3,163,183.65 - Step 4: Simplify right side
12,138,631.65x = 57,595,081,752,978.79 - Step 5: Solve for x
x = 57,595,081,752,978.79/12,138,631.65 - Step 6: Final answer
x = 4,744,775.48
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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.