Finding the Fourth Proportional to 20,212,214.40, 30,318,321.60 and 8,083,549.80
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Solution
The fourth proportional to 20,212,214.40, 30,318,321.60 and 8,083,549.80 is: 12,125,324.70
Step by Step Solution
- Step 1: Write the proportion equation
20,212,214.40 : 30,318,321.60 = 8,083,549.80 : x - Step 2: Convert to fraction form
20,212,214.40/30,318,321.60 = 8,083,549.80/x - Step 3: Cross multiply
20,212,214.40x = 30,318,321.60 × 8,083,549.80 - Step 4: Simplify right side
20,212,214.40x = 245,079,662,506,015.69 - Step 5: Solve for x
x = 245,079,662,506,015.69/20,212,214.40 - Step 6: Final answer
x = 12,125,324.70
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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.