Finding the Fourth Proportional to 13,626.68, 20,431.15 and 6,507.99
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Solution
The fourth proportional to 13,626.68, 20,431.15 and 6,507.99 is: 9,757.75
Step by Step Solution
- Step 1: Write the proportion equation
13,626.68 : 20,431.15 = 6,507.99 : x - Step 2: Convert to fraction form
13,626.68/20,431.15 = 6,507.99/x - Step 3: Cross multiply
13,626.68x = 20,431.15 × 6,507.99 - Step 4: Simplify right side
13,626.68x = 132,965,703.62 - Step 5: Solve for x
x = 132,965,703.62/13,626.68 - Step 6: Final answer
x = 9,757.75
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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.