Finding the Fourth Proportional to 12,471,935.70, 18,707,903.55 and 8,362,125.30
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Solution
The fourth proportional to 12,471,935.70, 18,707,903.55 and 8,362,125.30 is: 12,543,187.95
Step by Step Solution
- Step 1: Write the proportion equation
12,471,935.70 : 18,707,903.55 = 8,362,125.30 : x - Step 2: Convert to fraction form
12,471,935.70/18,707,903.55 = 8,362,125.30/x - Step 3: Cross multiply
12,471,935.70x = 18,707,903.55 × 8,362,125.30 - Step 4: Simplify right side
12,471,935.70x = 156,437,833,585,414.81 - Step 5: Solve for x
x = 156,437,833,585,414.81/12,471,935.70 - Step 6: Final answer
x = 12,543,187.95
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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.