Finding the Fourth Proportional to 18,821,664.20, 28,232,496.30 and 11,244,729.80
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Solution
The fourth proportional to 18,821,664.20, 28,232,496.30 and 11,244,729.80 is: 16,867,094.70
Step by Step Solution
- Step 1: Write the proportion equation
18,821,664.20 : 28,232,496.30 = 11,244,729.80 : x - Step 2: Convert to fraction form
18,821,664.20/28,232,496.30 = 11,244,729.80/x - Step 3: Cross multiply
18,821,664.20x = 28,232,496.30 × 11,244,729.80 - Step 4: Simplify right side
18,821,664.20x = 317,466,792,472,999.75 - Step 5: Solve for x
x = 317,466,792,472,999.75/18,821,664.20 - Step 6: Final answer
x = 16,867,094.70
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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.