Finding the Fourth Proportional to 13,149,019.80, 19,723,529.70 and 7,760,251.80
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Solution
The fourth proportional to 13,149,019.80, 19,723,529.70 and 7,760,251.80 is: 11,640,377.70
Step by Step Solution
- Step 1: Write the proportion equation
13,149,019.80 : 19,723,529.70 = 7,760,251.80 : x - Step 2: Convert to fraction form
13,149,019.80/19,723,529.70 = 7,760,251.80/x - Step 3: Cross multiply
13,149,019.80x = 19,723,529.70 × 7,760,251.80 - Step 4: Simplify right side
13,149,019.80x = 153,059,556,856,778.44 - Step 5: Solve for x
x = 153,059,556,856,778.44/13,149,019.80 - Step 6: Final answer
x = 11,640,377.70
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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.