Finding the Fourth Proportional to 15,383,091.21, 21,228,493.83 and 8,413,968.99
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Solution
The fourth proportional to 15,383,091.21, 21,228,493.83 and 8,413,968.99 is: 11,611,183.11
Step by Step Solution
- Step 1: Write the proportion equation
15,383,091.21 : 21,228,493.83 = 8,413,968.99 : x - Step 2: Convert to fraction form
15,383,091.21/21,228,493.83 = 8,413,968.99/x - Step 3: Cross multiply
15,383,091.21x = 21,228,493.83 × 8,413,968.99 - Step 4: Simplify right side
15,383,091.21x = 178,615,888,790,026.31 - Step 5: Solve for x
x = 178,615,888,790,026.31/15,383,091.21 - Step 6: Final answer
x = 11,611,183.11
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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.