Finding the Fourth Proportional to 28,156,198.26, 38,855,553.58 and 15,279,142.26
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Solution
The fourth proportional to 28,156,198.26, 38,855,553.58 and 15,279,142.26 is: 21,085,216.31
Step by Step Solution
- Step 1: Write the proportion equation
28,156,198.26 : 38,855,553.58 = 15,279,142.26 : x - Step 2: Convert to fraction form
28,156,198.26/38,855,553.58 = 15,279,142.26/x - Step 3: Cross multiply
28,156,198.26x = 38,855,553.58 × 15,279,142.26 - Step 4: Simplify right side
28,156,198.26x = 593,679,530,739,872.25 - Step 5: Solve for x
x = 593,679,530,739,872.25/28,156,198.26 - Step 6: Final answer
x = 21,085,216.31
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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.