Finding the Fourth Proportional to 20,188,786.23, 27,860,382.95 and 11,021,428.98
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Solution
The fourth proportional to 20,188,786.23, 27,860,382.95 and 11,021,428.98 is: 15,209,494.44
Step by Step Solution
- Step 1: Write the proportion equation
20,188,786.23 : 27,860,382.95 = 11,021,428.98 : x - Step 2: Convert to fraction form
20,188,786.23/27,860,382.95 = 11,021,428.98/x - Step 3: Cross multiply
20,188,786.23x = 27,860,382.95 × 11,021,428.98 - Step 4: Simplify right side
20,188,786.23x = 307,061,231,983,920.75 - Step 5: Solve for x
x = 307,061,231,983,920.75/20,188,786.23 - Step 6: Final answer
x = 15,209,494.44
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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.