Finding the Fourth Proportional to 21,116,981.97, 29,141,435.12 and 11,459,189.97
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Solution
The fourth proportional to 21,116,981.97, 29,141,435.12 and 11,459,189.97 is: 15,813,682.16
Step by Step Solution
- Step 1: Write the proportion equation
21,116,981.97 : 29,141,435.12 = 11,459,189.97 : x - Step 2: Convert to fraction form
21,116,981.97/29,141,435.12 = 11,459,189.97/x - Step 3: Cross multiply
21,116,981.97x = 29,141,435.12 × 11,459,189.97 - Step 4: Simplify right side
21,116,981.97x = 333,937,240,981,213.81 - Step 5: Solve for x
x = 333,937,240,981,213.81/21,116,981.97 - Step 6: Final answer
x = 15,813,682.16
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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.