Finding the Fourth Proportional to 18,503,571.99, 27,642,902.06 and 11,973,449.09
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Solution
The fourth proportional to 18,503,571.99, 27,642,902.06 and 11,973,449.09 is: 17,887,404.70
Step by Step Solution
- Step 1: Write the proportion equation
18,503,571.99 : 27,642,902.06 = 11,973,449.09 : x - Step 2: Convert to fraction form
18,503,571.99/27,642,902.06 = 11,973,449.09/x - Step 3: Cross multiply
18,503,571.99x = 27,642,902.06 × 11,973,449.09 - Step 4: Simplify right side
18,503,571.99x = 330,980,880,614,307 - Step 5: Solve for x
x = 330,980,880,614,307/18,503,571.99 - Step 6: Final answer
x = 17,887,404.70
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.