Finding the Fourth Proportional to 28,773,791.45, 39,707,368.79 and 15,720,770.09
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Solution
The fourth proportional to 28,773,791.45, 39,707,368.79 and 15,720,770.09 is: 21,694,409.54
Step by Step Solution
- Step 1: Write the proportion equation
28,773,791.45 : 39,707,368.79 = 15,720,770.09 : x - Step 2: Convert to fraction form
28,773,791.45/39,707,368.79 = 15,720,770.09/x - Step 3: Cross multiply
28,773,791.45x = 39,707,368.79 × 15,720,770.09 - Step 4: Simplify right side
28,773,791.45x = 624,230,415,626,431.50 - Step 5: Solve for x
x = 624,230,415,626,431.50/28,773,791.45 - Step 6: Final answer
x = 21,694,409.54
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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.