Finding the Fourth Proportional to 20,278,110.99, 27,984,913.79 and 11,579,077.92
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Solution
The fourth proportional to 20,278,110.99, 27,984,913.79 and 11,579,077.92 is: 15,979,767.42
Step by Step Solution
- Step 1: Write the proportion equation
20,278,110.99 : 27,984,913.79 = 11,579,077.92 : x - Step 2: Convert to fraction form
20,278,110.99/27,984,913.79 = 11,579,077.92/x - Step 3: Cross multiply
20,278,110.99x = 27,984,913.79 × 11,579,077.92 - Step 4: Simplify right side
20,278,110.99x = 324,039,497,300,997.12 - Step 5: Solve for x
x = 324,039,497,300,997.12/20,278,110.99 - Step 6: Final answer
x = 15,979,767.42
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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.