Finding the Third Proportional to 18,138.94 and 20,508.19
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Solution
The third proportional to 18,138.94 and 20,508.19 is: 23,186.90
Step by Step Solution
- Step 1: Write the proportion equation
18,138.94 : 20,508.19 = 20,508.19 : x - Step 2: Convert to fraction form
18,138.94/20,508.19 = 20,508.19/x - Step 3: Cross multiply
18,138.94x = 20,508.19 × 20,508.19 - Step 4: Simplify right side
18,138.94x = 420,585,754.54 - Step 5: Solve for x
x = 420,585,754.54/18,138.94 - Step 6: Final answer
x = 23,186.90
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These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.