Finding the Fourth Proportional to 20,394,074.80, 30,591,112.20 and 18,536,129.20
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Solution
The fourth proportional to 20,394,074.80, 30,591,112.20 and 18,536,129.20 is: 27,804,193.80
Step by Step Solution
- Step 1: Write the proportion equation
20,394,074.80 : 30,591,112.20 = 18,536,129.20 : x - Step 2: Convert to fraction form
20,394,074.80/30,591,112.20 = 18,536,129.20/x - Step 3: Cross multiply
20,394,074.80x = 30,591,112.20 × 18,536,129.20 - Step 4: Simplify right side
20,394,074.80x = 567,040,808,110,896.25 - Step 5: Solve for x
x = 567,040,808,110,896.25/20,394,074.80 - Step 6: Final answer
x = 27,804,193.80
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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.