Finding the Fourth Proportional to 18,823,761.82, 28,236,939.86 and 7,882,935.63
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Solution
The fourth proportional to 18,823,761.82, 28,236,939.86 and 7,882,935.63 is: 11,824,946.65
Step by Step Solution
- Step 1: Write the proportion equation
18,823,761.82 : 28,236,939.86 = 7,882,935.63 : x - Step 2: Convert to fraction form
18,823,761.82/28,236,939.86 = 7,882,935.63/x - Step 3: Cross multiply
18,823,761.82x = 28,236,939.86 × 7,882,935.63 - Step 4: Simplify right side
18,823,761.82x = 222,589,979,304,561.22 - Step 5: Solve for x
x = 222,589,979,304,561.22/18,823,761.82 - Step 6: Final answer
x = 11,824,946.65
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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.