Finding the Fourth Proportional to 20,206,496.87, 30,328,907.61 and 12,506,850.97
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Solution
The fourth proportional to 20,206,496.87, 30,328,907.61 and 12,506,850.97 is: 18,772,136.99
Step by Step Solution
- Step 1: Write the proportion equation
20,206,496.87 : 30,328,907.61 = 12,506,850.97 : x - Step 2: Convert to fraction form
20,206,496.87/30,328,907.61 = 12,506,850.97/x - Step 3: Cross multiply
20,206,496.87x = 30,328,907.61 × 12,506,850.97 - Step 4: Simplify right side
20,206,496.87x = 379,319,127,461,896.25 - Step 5: Solve for x
x = 379,319,127,461,896.25/20,206,496.87 - Step 6: Final answer
x = 18,772,136.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.