Finding the Fourth Proportional to 18,954,644.38, 28,431,965.66 and 5,309,811.05
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Solution
The fourth proportional to 18,954,644.38, 28,431,965.66 and 5,309,811.05 is: 7,964,716.32
Step by Step Solution
- Step 1: Write the proportion equation
18,954,644.38 : 28,431,965.66 = 5,309,811.05 : x - Step 2: Convert to fraction form
18,954,644.38/28,431,965.66 = 5,309,811.05/x - Step 3: Cross multiply
18,954,644.38x = 28,431,965.66 × 5,309,811.05 - Step 4: Simplify right side
18,954,644.38x = 150,968,365,368,351.97 - Step 5: Solve for x
x = 150,968,365,368,351.97/18,954,644.38 - Step 6: Final answer
x = 7,964,716.32
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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.