Finding the Fourth Proportional to 20,482,143.84, 28,266,217.20 and 11,780,318.88
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Solution
The fourth proportional to 20,482,143.84, 28,266,217.20 and 11,780,318.88 is: 16,257,333.94
Step by Step Solution
- Step 1: Write the proportion equation
20,482,143.84 : 28,266,217.20 = 11,780,318.88 : x - Step 2: Convert to fraction form
20,482,143.84/28,266,217.20 = 11,780,318.88/x - Step 3: Cross multiply
20,482,143.84x = 28,266,217.20 × 11,780,318.88 - Step 4: Simplify right side
20,482,143.84x = 332,985,052,147,340.75 - Step 5: Solve for x
x = 332,985,052,147,340.75/20,482,143.84 - Step 6: Final answer
x = 16,257,333.94
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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.