Finding the Fourth Proportional to 13,158,912.20, 19,738,368.30 and 5,584,893.80
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Solution
The fourth proportional to 13,158,912.20, 19,738,368.30 and 5,584,893.80 is: 8,377,340.70
Step by Step Solution
- Step 1: Write the proportion equation
13,158,912.20 : 19,738,368.30 = 5,584,893.80 : x - Step 2: Convert to fraction form
13,158,912.20/19,738,368.30 = 5,584,893.80/x - Step 3: Cross multiply
13,158,912.20x = 19,738,368.30 × 5,584,893.80 - Step 4: Simplify right side
13,158,912.20x = 110,236,690,740,786.55 - Step 5: Solve for x
x = 110,236,690,740,786.55/13,158,912.20 - Step 6: Final answer
x = 8,377,340.70
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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.