Finding the Fourth Proportional to 12,890,201.97, 17,835,320.71 and 11,239,790.61
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Solution
The fourth proportional to 12,890,201.97, 17,835,320.71 and 11,239,790.61 is: 15,551,755.56
Step by Step Solution
- Step 1: Write the proportion equation
12,890,201.97 : 17,835,320.71 = 11,239,790.61 : x - Step 2: Convert to fraction form
12,890,201.97/17,835,320.71 = 11,239,790.61/x - Step 3: Cross multiply
12,890,201.97x = 17,835,320.71 × 11,239,790.61 - Step 4: Simplify right side
12,890,201.97x = 200,465,270,159,981.22 - Step 5: Solve for x
x = 200,465,270,159,981.22/12,890,201.97 - Step 6: Final answer
x = 15,551,755.56
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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.