Finding the Fourth Proportional to 20,738,075.20, 31,107,112.80 and 19,478,363.20
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Solution
The fourth proportional to 20,738,075.20, 31,107,112.80 and 19,478,363.20 is: 29,217,544.80
Step by Step Solution
- Step 1: Write the proportion equation
20,738,075.20 : 31,107,112.80 = 19,478,363.20 : x - Step 2: Convert to fraction form
20,738,075.20/31,107,112.80 = 19,478,363.20/x - Step 3: Cross multiply
20,738,075.20x = 31,107,112.80 × 19,478,363.20 - Step 4: Simplify right side
20,738,075.20x = 605,915,641,221,769 - Step 5: Solve for x
x = 605,915,641,221,769/20,738,075.20 - Step 6: Final answer
x = 29,217,544.80
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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.