Finding the Fourth Proportional to 20,133,247.92, 27,784,575.36 and 11,431,132.80
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Solution
The fourth proportional to 20,133,247.92, 27,784,575.36 and 11,431,132.80 is: 15,775,356.86
Step by Step Solution
- Step 1: Write the proportion equation
20,133,247.92 : 27,784,575.36 = 11,431,132.80 : x - Step 2: Convert to fraction form
20,133,247.92/27,784,575.36 = 11,431,132.80/x - Step 3: Cross multiply
20,133,247.92x = 27,784,575.36 × 11,431,132.80 - Step 4: Simplify right side
20,133,247.92x = 317,609,170,731,767.81 - Step 5: Solve for x
x = 317,609,170,731,767.81/20,133,247.92 - Step 6: Final answer
x = 15,775,356.86
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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.