Finding the Fourth Proportional to 18,965,140.80, 28,405,720.80 and 15,605,908.80
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Solution
The fourth proportional to 18,965,140.80, 28,405,720.80 and 15,605,908.80 is: 23,374,310.42
Step by Step Solution
- Step 1: Write the proportion equation
18,965,140.80 : 28,405,720.80 = 15,605,908.80 : x - Step 2: Convert to fraction form
18,965,140.80/28,405,720.80 = 15,605,908.80/x - Step 3: Cross multiply
18,965,140.80x = 28,405,720.80 × 15,605,908.80 - Step 4: Simplify right side
18,965,140.80x = 443,297,088,203,063.06 - Step 5: Solve for x
x = 443,297,088,203,063.06/18,965,140.80 - Step 6: Final answer
x = 23,374,310.42
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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.