Finding the Fourth Proportional to 22,740, 31,378.96 and 12,668.05
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Solution
The fourth proportional to 22,740, 31,378.96 and 12,668.05 is: 17,480.66
Step by Step Solution
- Step 1: Write the proportion equation
22,740 : 31,378.96 = 12,668.05 : x - Step 2: Convert to fraction form
22,740/31,378.96 = 12,668.05/x - Step 3: Cross multiply
22,740x = 31,378.96 × 12,668.05 - Step 4: Simplify right side
22,740x = 397,510,234.23 - Step 5: Solve for x
x = 397,510,234.23/22,740 - Step 6: Final answer
x = 17,480.66
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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.