Finding the Fourth Proportional to 19,809,676.82, 27,305,761.05 and 15,616,525.31
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Solution
The fourth proportional to 19,809,676.82, 27,305,761.05 and 15,616,525.31 is: 21,525,899.31
Step by Step Solution
- Step 1: Write the proportion equation
19,809,676.82 : 27,305,761.05 = 15,616,525.31 : x - Step 2: Convert to fraction form
19,809,676.82/27,305,761.05 = 15,616,525.31/x - Step 3: Cross multiply
19,809,676.82x = 27,305,761.05 × 15,616,525.31 - Step 4: Simplify right side
19,809,676.82x = 426,421,108,409,608.38 - Step 5: Solve for x
x = 426,421,108,409,608.38/19,809,676.82 - Step 6: Final answer
x = 21,525,899.31
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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.