Finding the Fourth Proportional to 13,207.70, 18,226.60 and 7,239.37
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Solution
The fourth proportional to 13,207.70, 18,226.60 and 7,239.37 is: 9,990.32
Step by Step Solution
- Step 1: Write the proportion equation
13,207.70 : 18,226.60 = 7,239.37 : x - Step 2: Convert to fraction form
13,207.70/18,226.60 = 7,239.37/x - Step 3: Cross multiply
13,207.70x = 18,226.60 × 7,239.37 - Step 4: Simplify right side
13,207.70x = 131,949,101.24 - Step 5: Solve for x
x = 131,949,101.24/13,207.70 - Step 6: Final answer
x = 9,990.32
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1.5x scale
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.