Finding the Fourth Proportional to 20,135.25, 27,787.02 and 11,183.58
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Solution
The fourth proportional to 20,135.25, 27,787.02 and 11,183.58 is: 15,433.55
Step by Step Solution
- Step 1: Write the proportion equation
20,135.25 : 27,787.02 = 11,183.58 : x - Step 2: Convert to fraction form
20,135.25/27,787.02 = 11,183.58/x - Step 3: Cross multiply
20,135.25x = 27,787.02 × 11,183.58 - Step 4: Simplify right side
20,135.25x = 310,758,361.13 - Step 5: Solve for x
x = 310,758,361.13/20,135.25 - Step 6: Final answer
x = 15,433.55
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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.