Finding the Fourth Proportional to 19,579,872.79, 27,018,640.32 and 11,320,464.99
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Solution
The fourth proportional to 19,579,872.79, 27,018,640.32 and 11,320,464.99 is: 15,621,325.79
Step by Step Solution
- Step 1: Write the proportion equation
19,579,872.79 : 27,018,640.32 = 11,320,464.99 : x - Step 2: Convert to fraction form
19,579,872.79/27,018,640.32 = 11,320,464.99/x - Step 3: Cross multiply
19,579,872.79x = 27,018,640.32 × 11,320,464.99 - Step 4: Simplify right side
19,579,872.79x = 305,863,571,628,266.88 - Step 5: Solve for x
x = 305,863,571,628,266.88/19,579,872.79 - Step 6: Final answer
x = 15,621,325.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.