Finding the Fourth Proportional to 21,662,112.20, 29,889,296.97 and 12,837,673.80
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Solution
The fourth proportional to 21,662,112.20, 29,889,296.97 and 12,837,673.80 is: 17,713,371.68
Step by Step Solution
- Step 1: Write the proportion equation
21,662,112.20 : 29,889,296.97 = 12,837,673.80 : x - Step 2: Convert to fraction form
21,662,112.20/29,889,296.97 = 12,837,673.80/x - Step 3: Cross multiply
21,662,112.20x = 29,889,296.97 × 12,837,673.80 - Step 4: Simplify right side
21,662,112.20x = 383,709,044,612,188.38 - Step 5: Solve for x
x = 383,709,044,612,188.38/21,662,112.20 - Step 6: Final answer
x = 17,713,371.68
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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.