Finding the Fourth Proportional to 20,568,861.74, 28,384,414.75 and 11,276,114.21
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Solution
The fourth proportional to 20,568,861.74, 28,384,414.75 and 11,276,114.21 is: 15,560,700.76
Step by Step Solution
- Step 1: Write the proportion equation
20,568,861.74 : 28,384,414.75 = 11,276,114.21 : x - Step 2: Convert to fraction form
20,568,861.74/28,384,414.75 = 11,276,114.21/x - Step 3: Cross multiply
20,568,861.74x = 28,384,414.75 × 11,276,114.21 - Step 4: Simplify right side
20,568,861.74x = 320,065,902,334,896.25 - Step 5: Solve for x
x = 320,065,902,334,896.25/20,568,861.74 - Step 6: Final answer
x = 15,560,700.76
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1.5x scale
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.