Finding the Fourth Proportional to 20,696,874.26, 28,562,940.60 and 11,404,433.09
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Solution
The fourth proportional to 20,696,874.26, 28,562,940.60 and 11,404,433.09 is: 15,738,808.70
Step by Step Solution
- Step 1: Write the proportion equation
20,696,874.26 : 28,562,940.60 = 11,404,433.09 : x - Step 2: Convert to fraction form
20,696,874.26/28,562,940.60 = 11,404,433.09/x - Step 3: Cross multiply
20,696,874.26x = 28,562,940.60 × 11,404,433.09 - Step 4: Simplify right side
20,696,874.26x = 325,744,144,800,257 - Step 5: Solve for x
x = 325,744,144,800,257/20,696,874.26 - Step 6: Final answer
x = 15,738,808.70
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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.