Finding the Fourth Proportional to 12,249,223.20, 18,379,739.70 and 8,647,234.20
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Solution
The fourth proportional to 12,249,223.20, 18,379,739.70 and 8,647,234.20 is: 12,975,019.81
Step by Step Solution
- Step 1: Write the proportion equation
12,249,223.20 : 18,379,739.70 = 8,647,234.20 : x - Step 2: Convert to fraction form
12,249,223.20/18,379,739.70 = 8,647,234.20/x - Step 3: Cross multiply
12,249,223.20x = 18,379,739.70 × 8,647,234.20 - Step 4: Simplify right side
12,249,223.20x = 158,933,913,720,937.72 - Step 5: Solve for x
x = 158,933,913,720,937.72/12,249,223.20 - Step 6: Final answer
x = 12,975,019.81
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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.