Finding the Fourth Proportional to 12,137,930.40, 18,204,562.80 and 3,618,544.80
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Solution
The fourth proportional to 12,137,930.40, 18,204,562.80 and 3,618,544.80 is: 5,427,121.75
Step by Step Solution
- Step 1: Write the proportion equation
12,137,930.40 : 18,204,562.80 = 3,618,544.80 : x - Step 2: Convert to fraction form
12,137,930.40/18,204,562.80 = 3,618,544.80/x - Step 3: Cross multiply
12,137,930.40x = 18,204,562.80 × 3,618,544.80 - Step 4: Simplify right side
12,137,930.40x = 65,874,026,056,213.44 - Step 5: Solve for x
x = 65,874,026,056,213.44/12,137,930.40 - Step 6: Final answer
x = 5,427,121.75
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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.