Finding the Fourth Proportional to 20,137.74, 27,790.46 and 11,186.07
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Solution
The fourth proportional to 20,137.74, 27,790.46 and 11,186.07 is: 15,436.99
Step by Step Solution
- Step 1: Write the proportion equation
20,137.74 : 27,790.46 = 11,186.07 : x - Step 2: Convert to fraction form
20,137.74/27,790.46 = 11,186.07/x - Step 3: Cross multiply
20,137.74x = 27,790.46 × 11,186.07 - Step 4: Simplify right side
20,137.74x = 310,866,030.89 - Step 5: Solve for x
x = 310,866,030.89/20,137.74 - Step 6: Final answer
x = 15,436.99
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1.5x scale
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.