Finding the Fourth Proportional to 18,211,652.20, 27,318,860.70 and 5,431,159.40
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Solution
The fourth proportional to 18,211,652.20, 27,318,860.70 and 5,431,159.40 is: 8,147,151.37
Step by Step Solution
- Step 1: Write the proportion equation
18,211,652.20 : 27,318,860.70 = 5,431,159.40 : x - Step 2: Convert to fraction form
18,211,652.20/27,318,860.70 = 5,431,159.40/x - Step 3: Cross multiply
18,211,652.20x = 27,318,860.70 × 5,431,159.40 - Step 4: Simplify right side
18,211,652.20x = 148,373,087,088,095.59 - Step 5: Solve for x
x = 148,373,087,088,095.59/18,211,652.20 - Step 6: Final answer
x = 8,147,151.37
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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.