Finding the Fourth Proportional to 21,581,755.94, 29,781,936.95 and 11,792,536.17
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Solution
The fourth proportional to 21,581,755.94, 29,781,936.95 and 11,792,536.17 is: 16,273,215.66
Step by Step Solution
- Step 1: Write the proportion equation
21,581,755.94 : 29,781,936.95 = 11,792,536.17 : x - Step 2: Convert to fraction form
21,581,755.94/29,781,936.95 = 11,792,536.17/x - Step 3: Cross multiply
21,581,755.94x = 29,781,936.95 × 11,792,536.17 - Step 4: Simplify right side
21,581,755.94x = 351,204,568,636,571.81 - Step 5: Solve for x
x = 351,204,568,636,571.81/21,581,755.94 - Step 6: Final answer
x = 16,273,215.66
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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.