Finding the Fourth Proportional to 18,884,087.68, 28,278,299.04 and 11,709,633.28
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Solution
The fourth proportional to 18,884,087.68, 28,278,299.04 and 11,709,633.28 is: 17,534,789.99
Step by Step Solution
- Step 1: Write the proportion equation
18,884,087.68 : 28,278,299.04 = 11,709,633.28 : x - Step 2: Convert to fraction form
18,884,087.68/28,278,299.04 = 11,709,633.28/x - Step 3: Cross multiply
18,884,087.68x = 28,278,299.04 × 11,709,633.28 - Step 4: Simplify right side
18,884,087.68x = 331,128,511,540,576 - Step 5: Solve for x
x = 331,128,511,540,576/18,884,087.68 - Step 6: Final answer
x = 17,534,789.99
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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.