Finding the Fourth Proportional to 18,145,801.80, 27,218,702.70 and 12,397,782.60
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Solution
The fourth proportional to 18,145,801.80, 27,218,702.70 and 12,397,782.60 is: 18,596,673.90
Step by Step Solution
- Step 1: Write the proportion equation
18,145,801.80 : 27,218,702.70 = 12,397,782.60 : x - Step 2: Convert to fraction form
18,145,801.80/27,218,702.70 = 12,397,782.60/x - Step 3: Cross multiply
18,145,801.80x = 27,218,702.70 × 12,397,782.60 - Step 4: Simplify right side
18,145,801.80x = 337,451,558,728,633 - Step 5: Solve for x
x = 337,451,558,728,633/18,145,801.80 - Step 6: Final answer
x = 18,596,673.90
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1.5x scale
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.