Finding the Fourth Proportional to 19,821,163.59, 29,728,201.97 and 12,611,280.69
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Solution
The fourth proportional to 19,821,163.59, 29,728,201.97 and 12,611,280.69 is: 18,914,666.53
Step by Step Solution
- Step 1: Write the proportion equation
19,821,163.59 : 29,728,201.97 = 12,611,280.69 : x - Step 2: Convert to fraction form
19,821,163.59/29,728,201.97 = 12,611,280.69/x - Step 3: Cross multiply
19,821,163.59x = 29,728,201.97 × 12,611,280.69 - Step 4: Simplify right side
19,821,163.59x = 374,910,699,484,209.12 - Step 5: Solve for x
x = 374,910,699,484,209.12/19,821,163.59 - Step 6: Final answer
x = 18,914,666.53
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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.