Finding the Fourth Proportional to 20,372,697.07, 28,114,853.84 and 11,205,580.39
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Solution
The fourth proportional to 20,372,697.07, 28,114,853.84 and 11,205,580.39 is: 15,463,993.49
Step by Step Solution
- Step 1: Write the proportion equation
20,372,697.07 : 28,114,853.84 = 11,205,580.39 : x - Step 2: Convert to fraction form
20,372,697.07/28,114,853.84 = 11,205,580.39/x - Step 3: Cross multiply
20,372,697.07x = 28,114,853.84 × 11,205,580.39 - Step 4: Simplify right side
20,372,697.07x = 315,043,254,857,220.19 - Step 5: Solve for x
x = 315,043,254,857,220.19/20,372,697.07 - Step 6: Final answer
x = 15,463,993.49
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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.