Finding the Fourth Proportional to 14,919,871.68, 20,588,245.20 and 8,392,201.56
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Solution
The fourth proportional to 14,919,871.68, 20,588,245.20 and 8,392,201.56 is: 11,580,575.70
Step by Step Solution
- Step 1: Write the proportion equation
14,919,871.68 : 20,588,245.20 = 8,392,201.56 : x - Step 2: Convert to fraction form
14,919,871.68/20,588,245.20 = 8,392,201.56/x - Step 3: Cross multiply
14,919,871.68x = 20,588,245.20 × 8,392,201.56 - Step 4: Simplify right side
14,919,871.68x = 172,780,703,485,102.53 - Step 5: Solve for x
x = 172,780,703,485,102.53/14,919,871.68 - Step 6: Final answer
x = 11,580,575.70
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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.