Finding the Fourth Proportional to 21,116,982.09, 29,141,435.30 and 11,459,190.09
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Solution
The fourth proportional to 21,116,982.09, 29,141,435.30 and 11,459,190.09 is: 15,813,682.33
Step by Step Solution
- Step 1: Write the proportion equation
21,116,982.09 : 29,141,435.30 = 11,459,190.09 : x - Step 2: Convert to fraction form
21,116,982.09/29,141,435.30 = 11,459,190.09/x - Step 3: Cross multiply
21,116,982.09x = 29,141,435.30 × 11,459,190.09 - Step 4: Simplify right side
21,116,982.09x = 333,937,246,650,120.62 - Step 5: Solve for x
x = 333,937,246,650,120.62/21,116,982.09 - Step 6: Final answer
x = 15,813,682.33
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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.