Finding the Fourth Proportional to 20,664,826.17, 28,517,451.87 and 11,372,396.28
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Solution
The fourth proportional to 20,664,826.17, 28,517,451.87 and 11,372,396.28 is: 15,693,902.33
Step by Step Solution
- Step 1: Write the proportion equation
20,664,826.17 : 28,517,451.87 = 11,372,396.28 : x - Step 2: Convert to fraction form
20,664,826.17/28,517,451.87 = 11,372,396.28/x - Step 3: Cross multiply
20,664,826.17x = 28,517,451.87 × 11,372,396.28 - Step 4: Simplify right side
20,664,826.17x = 324,311,763,561,467.06 - Step 5: Solve for x
x = 324,311,763,561,467.06/20,664,826.17 - Step 6: Final answer
x = 15,693,902.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.