Finding the Fourth Proportional to 20,278,247.49, 27,985,102.16 and 11,579,214.42
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Solution
The fourth proportional to 20,278,247.49, 27,985,102.16 and 11,579,214.42 is: 15,979,955.79
Step by Step Solution
- Step 1: Write the proportion equation
20,278,247.49 : 27,985,102.16 = 11,579,214.42 : x - Step 2: Convert to fraction form
20,278,247.49/27,985,102.16 = 11,579,214.42/x - Step 3: Cross multiply
20,278,247.49x = 27,985,102.16 × 11,579,214.42 - Step 4: Simplify right side
20,278,247.49x = 324,045,498,418,349.06 - Step 5: Solve for x
x = 324,045,498,418,349.06/20,278,247.49 - Step 6: Final answer
x = 15,979,955.79
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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.