Finding the Fourth Proportional to 21,595,353.96, 29,801,942.66 and 12,894,286.92
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Solution
The fourth proportional to 21,595,353.96, 29,801,942.66 and 12,894,286.92 is: 17,794,327.43
Step by Step Solution
- Step 1: Write the proportion equation
21,595,353.96 : 29,801,942.66 = 12,894,286.92 : x - Step 2: Convert to fraction form
21,595,353.96/29,801,942.66 = 12,894,286.92/x - Step 3: Cross multiply
21,595,353.96x = 29,801,942.66 × 12,894,286.92 - Step 4: Simplify right side
21,595,353.96x = 384,274,799,431,428 - Step 5: Solve for x
x = 384,274,799,431,428/21,595,353.96 - Step 6: Final answer
x = 17,794,327.43
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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.