Finding the Fourth Proportional to 10,505,716.20, 15,743,812.05 and 8,350,427.70
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Solution
The fourth proportional to 10,505,716.20, 15,743,812.05 and 8,350,427.70 is: 12,513,907.83
Step by Step Solution
- Step 1: Write the proportion equation
10,505,716.20 : 15,743,812.05 = 8,350,427.70 : x - Step 2: Convert to fraction form
10,505,716.20/15,743,812.05 = 8,350,427.70/x - Step 3: Cross multiply
10,505,716.20x = 15,743,812.05 × 8,350,427.70 - Step 4: Simplify right side
10,505,716.20x = 131,467,564,245,913.80 - Step 5: Solve for x
x = 131,467,564,245,913.80/10,505,716.20 - Step 6: Final answer
x = 12,513,907.83
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.