Finding the Fourth Proportional to 15,383,086.70, 21,228,487.64 and 8,413,964.49
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Solution
The fourth proportional to 15,383,086.70, 21,228,487.64 and 8,413,964.49 is: 11,611,176.92
Step by Step Solution
- Step 1: Write the proportion equation
15,383,086.70 : 21,228,487.64 = 8,413,964.49 : x - Step 2: Convert to fraction form
15,383,086.70/21,228,487.64 = 8,413,964.49/x - Step 3: Cross multiply
15,383,086.70x = 21,228,487.64 × 8,413,964.49 - Step 4: Simplify right side
15,383,086.70x = 178,615,741,137,294.09 - Step 5: Solve for x
x = 178,615,741,137,294.09/15,383,086.70 - Step 6: Final answer
x = 11,611,176.92
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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.