Finding the Fourth Proportional to 18,121,762.72, 27,182,616.24 and 12,424,715.68
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Solution
The fourth proportional to 18,121,762.72, 27,182,616.24 and 12,424,715.68 is: 18,637,054.43
Step by Step Solution
- Step 1: Write the proportion equation
18,121,762.72 : 27,182,616.24 = 12,424,715.68 : x - Step 2: Convert to fraction form
18,121,762.72/27,182,616.24 = 12,424,715.68/x - Step 3: Cross multiply
18,121,762.72x = 27,182,616.24 × 12,424,715.68 - Step 4: Simplify right side
18,121,762.72x = 337,736,278,220,550.62 - Step 5: Solve for x
x = 337,736,278,220,550.62/18,121,762.72 - Step 6: Final answer
x = 18,637,054.43
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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.