Finding the Fourth Proportional to 20,729,351.45, 28,606,604.46 and 11,436,920.99
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Solution
The fourth proportional to 20,729,351.45, 28,606,604.46 and 11,436,920.99 is: 15,783,005.84
Step by Step Solution
- Step 1: Write the proportion equation
20,729,351.45 : 28,606,604.46 = 11,436,920.99 : x - Step 2: Convert to fraction form
20,729,351.45/28,606,604.46 = 11,436,920.99/x - Step 3: Cross multiply
20,729,351.45x = 28,606,604.46 × 11,436,920.99 - Step 4: Simplify right side
20,729,351.45x = 327,171,475,001,201.62 - Step 5: Solve for x
x = 327,171,475,001,201.62/20,729,351.45 - Step 6: Final answer
x = 15,783,005.84
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.