Finding the Fourth Proportional to 13,503,918.26, 18,635,405.80 and 7,308,963.88
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Solution
The fourth proportional to 13,503,918.26, 18,635,405.80 and 7,308,963.88 is: 10,086,369.39
Step by Step Solution
- Step 1: Write the proportion equation
13,503,918.26 : 18,635,405.80 = 7,308,963.88 : x - Step 2: Convert to fraction form
13,503,918.26/18,635,405.80 = 7,308,963.88/x - Step 3: Cross multiply
13,503,918.26x = 18,635,405.80 × 7,308,963.88 - Step 4: Simplify right side
13,503,918.26x = 136,205,507,751,620.67 - Step 5: Solve for x
x = 136,205,507,751,620.67/13,503,918.26 - Step 6: Final answer
x = 10,086,369.39
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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.