Finding the Fourth Proportional to 20,278,246.99, 27,985,101.47 and 11,579,213.92
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Solution
The fourth proportional to 20,278,246.99, 27,985,101.47 and 11,579,213.92 is: 15,979,955.10
Step by Step Solution
- Step 1: Write the proportion equation
20,278,246.99 : 27,985,101.47 = 11,579,213.92 : x - Step 2: Convert to fraction form
20,278,246.99/27,985,101.47 = 11,579,213.92/x - Step 3: Cross multiply
20,278,246.99x = 27,985,101.47 × 11,579,213.92 - Step 4: Simplify right side
20,278,246.99x = 324,045,476,494,036.44 - Step 5: Solve for x
x = 324,045,476,494,036.44/20,278,246.99 - Step 6: Final answer
x = 15,979,955.10
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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.