Finding the Fourth Proportional to 19,821,168.09, 29,728,208.72 and 12,611,285.19
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Solution
The fourth proportional to 19,821,168.09, 29,728,208.72 and 12,611,285.19 is: 18,914,673.28
Step by Step Solution
- Step 1: Write the proportion equation
19,821,168.09 : 29,728,208.72 = 12,611,285.19 : x - Step 2: Convert to fraction form
19,821,168.09/29,728,208.72 = 12,611,285.19/x - Step 3: Cross multiply
19,821,168.09x = 29,728,208.72 × 12,611,285.19 - Step 4: Simplify right side
19,821,168.09x = 374,910,918,387,293.06 - Step 5: Solve for x
x = 374,910,918,387,293.06/19,821,168.09 - Step 6: Final answer
x = 18,914,673.28
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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.