Finding the Fourth Proportional to 13,874,312.40, 20,810,431.80 and 5,785,198.80
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Solution
The fourth proportional to 13,874,312.40, 20,810,431.80 and 5,785,198.80 is: 8,677,365.88
Step by Step Solution
- Step 1: Write the proportion equation
13,874,312.40 : 20,810,431.80 = 5,785,198.80 : x - Step 2: Convert to fraction form
13,874,312.40/20,810,431.80 = 5,785,198.80/x - Step 3: Cross multiply
13,874,312.40x = 20,810,431.80 × 5,785,198.80 - Step 4: Simplify right side
13,874,312.40x = 120,392,485,076,841.84 - Step 5: Solve for x
x = 120,392,485,076,841.84/13,874,312.40 - Step 6: Final answer
x = 8,677,365.88
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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.