Finding the Fourth Proportional to 18,618,997.81, 27,928,216.50 and 8,376,624.70
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Solution
The fourth proportional to 18,618,997.81, 27,928,216.50 and 8,376,624.70 is: 12,564,810.98
Step by Step Solution
- Step 1: Write the proportion equation
18,618,997.81 : 27,928,216.50 = 8,376,624.70 : x - Step 2: Convert to fraction form
18,618,997.81/27,928,216.50 = 8,376,624.70/x - Step 3: Cross multiply
18,618,997.81x = 27,928,216.50 × 8,376,624.70 - Step 4: Simplify right side
18,618,997.81x = 233,944,188,160,847.56 - Step 5: Solve for x
x = 233,944,188,160,847.56/18,618,997.81 - Step 6: Final answer
x = 12,564,810.98
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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.