Finding the Fourth Proportional to 18,120,989.62, 25,006,969.37 and 9,972,227.62
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Solution
The fourth proportional to 18,120,989.62, 25,006,969.37 and 9,972,227.62 is: 13,761,676.14
Step by Step Solution
- Step 1: Write the proportion equation
18,120,989.62 : 25,006,969.37 = 9,972,227.62 : x - Step 2: Convert to fraction form
18,120,989.62/25,006,969.37 = 9,972,227.62/x - Step 3: Cross multiply
18,120,989.62x = 25,006,969.37 × 9,972,227.62 - Step 4: Simplify right side
18,120,989.62x = 249,375,190,469,112 - Step 5: Solve for x
x = 249,375,190,469,112/18,120,989.62 - Step 6: Final answer
x = 13,761,676.14
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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.