Finding the Fourth Proportional to 18,343,631.20, 27,515,446.80 and 10,381,007.20
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Solution
The fourth proportional to 18,343,631.20, 27,515,446.80 and 10,381,007.20 is: 15,571,510.80
Step by Step Solution
- Step 1: Write the proportion equation
18,343,631.20 : 27,515,446.80 = 10,381,007.20 : x - Step 2: Convert to fraction form
18,343,631.20/27,515,446.80 = 10,381,007.20/x - Step 3: Cross multiply
18,343,631.20x = 27,515,446.80 × 10,381,007.20 - Step 4: Simplify right side
18,343,631.20x = 285,638,051,342,016.94 - Step 5: Solve for x
x = 285,638,051,342,016.94/18,343,631.20 - Step 6: Final answer
x = 15,571,510.80
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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.