Finding the Fourth Proportional to 13,793.24, 20,689.88 and 3,405
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Solution
The fourth proportional to 13,793.24, 20,689.88 and 3,405 is: 5,107.50
Step by Step Solution
- Step 1: Write the proportion equation
13,793.24 : 20,689.88 = 3,405 : x - Step 2: Convert to fraction form
13,793.24/20,689.88 = 3,405/x - Step 3: Cross multiply
13,793.24x = 20,689.88 × 3,405 - Step 4: Simplify right side
13,793.24x = 70,449,041.40 - Step 5: Solve for x
x = 70,449,041.40/13,793.24 - Step 6: Final answer
x = 5,107.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.