Finding the Fourth Proportional to 20,469,722.14, 30,571,869.65 and 18,546,791.41
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Solution
The fourth proportional to 20,469,722.14, 30,571,869.65 and 18,546,791.41 is: 27,699,940.70
Step by Step Solution
- Step 1: Write the proportion equation
20,469,722.14 : 30,571,869.65 = 18,546,791.41 : x - Step 2: Convert to fraction form
20,469,722.14/30,571,869.65 = 18,546,791.41/x - Step 3: Cross multiply
20,469,722.14x = 30,571,869.65 × 18,546,791.41 - Step 4: Simplify right side
20,469,722.14x = 567,010,089,412,259.62 - Step 5: Solve for x
x = 567,010,089,412,259.62/20,469,722.14 - Step 6: Final answer
x = 27,699,940.70
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.