Finding the Fourth Proportional to 21,580,346.99, 29,780,531.29 and 11,790,580.97
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Solution
The fourth proportional to 21,580,346.99, 29,780,531.29 and 11,790,580.97 is: 16,270,811.85
Step by Step Solution
- Step 1: Write the proportion equation
21,580,346.99 : 29,780,531.29 = 11,790,580.97 : x - Step 2: Convert to fraction form
21,580,346.99/29,780,531.29 = 11,790,580.97/x - Step 3: Cross multiply
21,580,346.99x = 29,780,531.29 × 11,790,580.97 - Step 4: Simplify right side
21,580,346.99x = 351,129,765,504,363.56 - Step 5: Solve for x
x = 351,129,765,504,363.56/21,580,346.99 - Step 6: Final answer
x = 16,270,811.85
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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.