Finding the Fourth Proportional to 13,664,855.88, 18,855,574.74 and 7,784,644.68
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Solution
The fourth proportional to 13,664,855.88, 18,855,574.74 and 7,784,644.68 is: 10,741,712.23
Step by Step Solution
- Step 1: Write the proportion equation
13,664,855.88 : 18,855,574.74 = 7,784,644.68 : x - Step 2: Convert to fraction form
13,664,855.88/18,855,574.74 = 7,784,644.68/x - Step 3: Cross multiply
13,664,855.88x = 18,855,574.74 × 7,784,644.68 - Step 4: Simplify right side
13,664,855.88x = 146,783,949,588,083.38 - Step 5: Solve for x
x = 146,783,949,588,083.38/13,664,855.88 - Step 6: Final answer
x = 10,741,712.23
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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.