Finding the Fourth Proportional to 20,180,861.20, 30,271,291.80 and 14,122,433.80
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Solution
The fourth proportional to 20,180,861.20, 30,271,291.80 and 14,122,433.80 is: 21,183,650.70
Step by Step Solution
- Step 1: Write the proportion equation
20,180,861.20 : 30,271,291.80 = 14,122,433.80 : x - Step 2: Convert to fraction form
20,180,861.20/30,271,291.80 = 14,122,433.80/x - Step 3: Cross multiply
20,180,861.20x = 30,271,291.80 × 14,122,433.80 - Step 4: Simplify right side
20,180,861.20x = 427,504,314,485,982.88 - Step 5: Solve for x
x = 427,504,314,485,982.88/20,180,861.20 - Step 6: Final answer
x = 21,183,650.70
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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.