Finding the Fourth Proportional to 21,407,729.36, 29,542,771.67 and 11,618,184.78
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Solution
The fourth proportional to 21,407,729.36, 29,542,771.67 and 11,618,184.78 is: 16,033,152.07
Step by Step Solution
- Step 1: Write the proportion equation
21,407,729.36 : 29,542,771.67 = 11,618,184.78 : x - Step 2: Convert to fraction form
21,407,729.36/29,542,771.67 = 11,618,184.78/x - Step 3: Cross multiply
21,407,729.36x = 29,542,771.67 × 11,618,184.78 - Step 4: Simplify right side
21,407,729.36x = 343,233,380,117,318.25 - Step 5: Solve for x
x = 343,233,380,117,318.25/21,407,729.36 - Step 6: Final answer
x = 16,033,152.07
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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.