Finding the Fourth Proportional to 11,821,990.64, 16,314,021.24 and 6,665,307.44
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Solution
The fourth proportional to 11,821,990.64, 16,314,021.24 and 6,665,307.44 is: 9,197,940.55
Step by Step Solution
- Step 1: Write the proportion equation
11,821,990.64 : 16,314,021.24 = 6,665,307.44 : x - Step 2: Convert to fraction form
11,821,990.64/16,314,021.24 = 6,665,307.44/x - Step 3: Cross multiply
11,821,990.64x = 16,314,021.24 × 6,665,307.44 - Step 4: Simplify right side
11,821,990.64x = 108,737,967,147,290.03 - Step 5: Solve for x
x = 108,737,967,147,290.03/11,821,990.64 - Step 6: Final answer
x = 9,197,940.55
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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.