Finding the Fourth Proportional to 18,135,028.20, 27,202,542.30 and 14,025,217.80
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Solution
The fourth proportional to 18,135,028.20, 27,202,542.30 and 14,025,217.80 is: 21,037,826.70
Step by Step Solution
- Step 1: Write the proportion equation
18,135,028.20 : 27,202,542.30 = 14,025,217.80 : x - Step 2: Convert to fraction form
18,135,028.20/27,202,542.30 = 14,025,217.80/x - Step 3: Cross multiply
18,135,028.20x = 27,202,542.30 × 14,025,217.80 - Step 4: Simplify right side
18,135,028.20x = 381,521,580,471,213 - Step 5: Solve for x
x = 381,521,580,471,213/18,135,028.20 - Step 6: Final answer
x = 21,037,826.70
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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.