Finding the Fourth Proportional to 20,702,745.98, 28,569,902.76 and 12,006,074.84
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Solution
The fourth proportional to 20,702,745.98, 28,569,902.76 and 12,006,074.84 is: 16,568,448.99
Step by Step Solution
- Step 1: Write the proportion equation
20,702,745.98 : 28,569,902.76 = 12,006,074.84 : x - Step 2: Convert to fraction form
20,702,745.98/28,569,902.76 = 12,006,074.84/x - Step 3: Cross multiply
20,702,745.98x = 28,569,902.76 × 12,006,074.84 - Step 4: Simplify right side
20,702,745.98x = 343,012,390,708,082.56 - Step 5: Solve for x
x = 343,012,390,708,082.56/20,702,745.98 - Step 6: Final answer
x = 16,568,448.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.