Finding the Fourth Proportional to 28,860,696.57, 39,827,269.01 and 15,629,765.97
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Solution
The fourth proportional to 28,860,696.57, 39,827,269.01 and 15,629,765.97 is: 21,568,810.45
Step by Step Solution
- Step 1: Write the proportion equation
28,860,696.57 : 39,827,269.01 = 15,629,765.97 : x - Step 2: Convert to fraction form
28,860,696.57/39,827,269.01 = 15,629,765.97/x - Step 3: Cross multiply
28,860,696.57x = 39,827,269.01 × 15,629,765.97 - Step 4: Simplify right side
28,860,696.57x = 622,490,893,837,974.38 - Step 5: Solve for x
x = 622,490,893,837,974.38/28,860,696.57 - Step 6: Final answer
x = 21,568,810.45
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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.