Finding the Fourth Proportional to 18,143,419.80, 27,215,129.70 and 16,757,736.60
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Solution
The fourth proportional to 18,143,419.80, 27,215,129.70 and 16,757,736.60 is: 25,136,604.90
Step by Step Solution
- Step 1: Write the proportion equation
18,143,419.80 : 27,215,129.70 = 16,757,736.60 : x - Step 2: Convert to fraction form
18,143,419.80/27,215,129.70 = 16,757,736.60/x - Step 3: Cross multiply
18,143,419.80x = 27,215,129.70 × 16,757,736.60 - Step 4: Simplify right side
18,143,419.80x = 456,063,975,047,437 - Step 5: Solve for x
x = 456,063,975,047,437/18,143,419.80 - Step 6: Final answer
x = 25,136,604.90
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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.