Finding the Fourth Proportional to 20,917,697.28, 28,869,327.84 and 11,751,037.44
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Solution
The fourth proportional to 20,917,697.28, 28,869,327.84 and 11,751,037.44 is: 16,218,063.96
Step by Step Solution
- Step 1: Write the proportion equation
20,917,697.28 : 28,869,327.84 = 11,751,037.44 : x - Step 2: Convert to fraction form
20,917,697.28/28,869,327.84 = 11,751,037.44/x - Step 3: Cross multiply
20,917,697.28x = 28,869,327.84 × 11,751,037.44 - Step 4: Simplify right side
20,917,697.28x = 339,244,552,315,474.31 - Step 5: Solve for x
x = 339,244,552,315,474.31/20,917,697.28 - Step 6: Final answer
x = 16,218,063.96
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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.