Finding the Fourth Proportional to 20,996,883.75, 28,975,699.98 and 11,339,091.75
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Solution
The fourth proportional to 20,996,883.75, 28,975,699.98 and 11,339,091.75 is: 15,647,946.83
Step by Step Solution
- Step 1: Write the proportion equation
20,996,883.75 : 28,975,699.98 = 11,339,091.75 : x - Step 2: Convert to fraction form
20,996,883.75/28,975,699.98 = 11,339,091.75/x - Step 3: Cross multiply
20,996,883.75x = 28,975,699.98 × 11,339,091.75 - Step 4: Simplify right side
20,996,883.75x = 328,558,120,593,693.19 - Step 5: Solve for x
x = 328,558,120,593,693.19/20,996,883.75 - Step 6: Final answer
x = 15,647,946.83
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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.