Finding the Fourth Proportional to 18,519.74, 27,771.91 and 11,489.19
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Solution
The fourth proportional to 18,519.74, 27,771.91 and 11,489.19 is: 17,229.01
Step by Step Solution
- Step 1: Write the proportion equation
18,519.74 : 27,771.91 = 11,489.19 : x - Step 2: Convert to fraction form
18,519.74/27,771.91 = 11,489.19/x - Step 3: Cross multiply
18,519.74x = 27,771.91 × 11,489.19 - Step 4: Simplify right side
18,519.74x = 319,076,838.63 - Step 5: Solve for x
x = 319,076,838.63/18,519.74 - Step 6: Final answer
x = 17,229.01
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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.