Finding the Fourth Proportional to 12,972,923.97, 17,901,735.98 and 7,171,249.01
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Solution
The fourth proportional to 12,972,923.97, 17,901,735.98 and 7,171,249.01 is: 9,895,826.62
Step by Step Solution
- Step 1: Write the proportion equation
12,972,923.97 : 17,901,735.98 = 7,171,249.01 : x - Step 2: Convert to fraction form
12,972,923.97/17,901,735.98 = 7,171,249.01/x - Step 3: Cross multiply
12,972,923.97x = 17,901,735.98 × 7,171,249.01 - Step 4: Simplify right side
12,972,923.97x = 128,377,806,298,491.47 - Step 5: Solve for x
x = 128,377,806,298,491.47/12,972,923.97 - Step 6: Final answer
x = 9,895,826.62
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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.