Finding the Fourth Proportional to 13,561,647.21, 18,707,618.97 and 8,590,985.49
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Solution
The fourth proportional to 13,561,647.21, 18,707,618.97 and 8,590,985.49 is: 11,850,837.93
Step by Step Solution
- Step 1: Write the proportion equation
13,561,647.21 : 18,707,618.97 = 8,590,985.49 : x - Step 2: Convert to fraction form
13,561,647.21/18,707,618.97 = 8,590,985.49/x - Step 3: Cross multiply
13,561,647.21x = 18,707,618.97 × 8,590,985.49 - Step 4: Simplify right side
13,561,647.21x = 160,716,883,123,718.75 - Step 5: Solve for x
x = 160,716,883,123,718.75/13,561,647.21 - Step 6: Final answer
x = 11,850,837.93
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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.