Finding the Fourth Proportional to 12,579.09, 18,883.21 and 6,747.09
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Solution
The fourth proportional to 12,579.09, 18,883.21 and 6,747.09 is: 10,128.45
Step by Step Solution
- Step 1: Write the proportion equation
12,579.09 : 18,883.21 = 6,747.09 : x - Step 2: Convert to fraction form
12,579.09/18,883.21 = 6,747.09/x - Step 3: Cross multiply
12,579.09x = 18,883.21 × 6,747.09 - Step 4: Simplify right side
12,579.09x = 127,406,717.36 - Step 5: Solve for x
x = 127,406,717.36/12,579.09 - Step 6: Final answer
x = 10,128.45
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1.5x scale
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.