Finding the Fourth Proportional to 21,638,454.93, 29,861,435.03 and 11,848,743.09
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Solution
The fourth proportional to 21,638,454.93, 29,861,435.03 and 11,848,743.09 is: 16,351,466.55
Step by Step Solution
- Step 1: Write the proportion equation
21,638,454.93 : 29,861,435.03 = 11,848,743.09 : x - Step 2: Convert to fraction form
21,638,454.93/29,861,435.03 = 11,848,743.09/x - Step 3: Cross multiply
21,638,454.93x = 29,861,435.03 × 11,848,743.09 - Step 4: Simplify right side
21,638,454.93x = 353,820,471,909,952.69 - Step 5: Solve for x
x = 353,820,471,909,952.69/21,638,454.93 - Step 6: Final answer
x = 16,351,466.55
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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.