Finding the Fourth Proportional to 18,592,403.80, 27,890,212.20 and 5,129,231.80
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Solution
The fourth proportional to 18,592,403.80, 27,890,212.20 and 5,129,231.80 is: 7,694,290.90
Step by Step Solution
- Step 1: Write the proportion equation
18,592,403.80 : 27,890,212.20 = 5,129,231.80 : x - Step 2: Convert to fraction form
18,592,403.80/27,890,212.20 = 5,129,231.80/x - Step 3: Cross multiply
18,592,403.80x = 27,890,212.20 × 5,129,231.80 - Step 4: Simplify right side
18,592,403.80x = 143,055,363,324,987.94 - Step 5: Solve for x
x = 143,055,363,324,987.94/18,592,403.80 - Step 6: Final answer
x = 7,694,290.90
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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.