Finding the Fourth Proportional to 20,275,447.46, 27,979,540.67 and 11,902,682.79
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Solution
The fourth proportional to 20,275,447.46, 27,979,540.67 and 11,902,682.79 is: 16,425,363.63
Step by Step Solution
- Step 1: Write the proportion equation
20,275,447.46 : 27,979,540.67 = 11,902,682.79 : x - Step 2: Convert to fraction form
20,275,447.46/27,979,540.67 = 11,902,682.79/x - Step 3: Cross multiply
20,275,447.46x = 27,979,540.67 × 11,902,682.79 - Step 4: Simplify right side
20,275,447.46x = 333,031,597,234,670.75 - Step 5: Solve for x
x = 333,031,597,234,670.75/20,275,447.46 - Step 6: Final answer
x = 16,425,363.63
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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.