Finding the Fourth Proportional to 20,220, 30,330 and 5,628
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Solution
The fourth proportional to 20,220, 30,330 and 5,628 is: 8,442
Step by Step Solution
- Step 1: Write the proportion equation
20,220 : 30,330 = 5,628 : x - Step 2: Convert to fraction form
20,220/30,330 = 5,628/x - Step 3: Cross multiply
20,220x = 30,330 × 5,628 - Step 4: Simplify right side
20,220x = 170,697,240 - Step 5: Solve for x
x = 170,697,240/20,220 - Step 6: Final answer
x = 8,442
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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.