Finding the Fourth Proportional to 18,626,455.43, 27,939,690.89 and 8,379,346.20
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Solution
The fourth proportional to 18,626,455.43, 27,939,690.89 and 8,379,346.20 is: 12,569,022.79
Step by Step Solution
- Step 1: Write the proportion equation
18,626,455.43 : 27,939,690.89 = 8,379,346.20 : x - Step 2: Convert to fraction form
18,626,455.43/27,939,690.89 = 8,379,346.20/x - Step 3: Cross multiply
18,626,455.43x = 27,939,690.89 × 8,379,346.20 - Step 4: Simplify right side
18,626,455.43x = 234,116,342,646,399.41 - Step 5: Solve for x
x = 234,116,342,646,399.41/18,626,455.43 - Step 6: Final answer
x = 12,569,022.79
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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.