Finding the Fourth Proportional to 21,587,665.70, 29,790,930.19 and 12,295,235.14
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Solution
The fourth proportional to 21,587,665.70, 29,790,930.19 and 12,295,235.14 is: 16,967,396.88
Step by Step Solution
- Step 1: Write the proportion equation
21,587,665.70 : 29,790,930.19 = 12,295,235.14 : x - Step 2: Convert to fraction form
21,587,665.70/29,790,930.19 = 12,295,235.14/x - Step 3: Cross multiply
21,587,665.70x = 29,790,930.19 × 12,295,235.14 - Step 4: Simplify right side
21,587,665.70x = 366,286,491,725,374.94 - Step 5: Solve for x
x = 366,286,491,725,374.94/21,587,665.70 - Step 6: Final answer
x = 16,967,396.88
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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.