Finding the Fourth Proportional to 15,149,777.30, 20,907,145.42 and 8,274,583.70
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Solution
The fourth proportional to 15,149,777.30, 20,907,145.42 and 8,274,583.70 is: 11,419,172.79
Step by Step Solution
- Step 1: Write the proportion equation
15,149,777.30 : 20,907,145.42 = 8,274,583.70 : x - Step 2: Convert to fraction form
15,149,777.30/20,907,145.42 = 8,274,583.70/x - Step 3: Cross multiply
15,149,777.30x = 20,907,145.42 × 8,274,583.70 - Step 4: Simplify right side
15,149,777.30x = 172,997,924,705,861.69 - Step 5: Solve for x
x = 172,997,924,705,861.69/15,149,777.30 - Step 6: Final answer
x = 11,419,172.79
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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.