Finding the Fourth Proportional to 21,691,945.48, 32,504,278.68 and 12,571,421.42
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Solution
The fourth proportional to 21,691,945.48, 32,504,278.68 and 12,571,421.42 is: 18,837,636.56
Step by Step Solution
- Step 1: Write the proportion equation
21,691,945.48 : 32,504,278.68 = 12,571,421.42 : x - Step 2: Convert to fraction form
21,691,945.48/32,504,278.68 = 12,571,421.42/x - Step 3: Cross multiply
21,691,945.48x = 32,504,278.68 × 12,571,421.42 - Step 4: Simplify right side
21,691,945.48x = 408,624,985,239,401.31 - Step 5: Solve for x
x = 408,624,985,239,401.31/21,691,945.48 - Step 6: Final answer
x = 18,837,636.56
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.