Finding the Fourth Proportional to 12,255,138.84, 18,384,704.16 and 3,620,115.48
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Solution
The fourth proportional to 12,255,138.84, 18,384,704.16 and 3,620,115.48 is: 5,430,762.80
Step by Step Solution
- Step 1: Write the proportion equation
12,255,138.84 : 18,384,704.16 = 3,620,115.48 : x - Step 2: Convert to fraction form
12,255,138.84/18,384,704.16 = 3,620,115.48/x - Step 3: Cross multiply
12,255,138.84x = 18,384,704.16 × 3,620,115.48 - Step 4: Simplify right side
12,255,138.84x = 66,554,752,124,836.40 - Step 5: Solve for x
x = 66,554,752,124,836.40/12,255,138.84 - Step 6: Final answer
x = 5,430,762.80
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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.