Finding the Fourth Proportional to 21,663,553.65, 29,898,912.69 and 13,716,834.68
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Solution
The fourth proportional to 21,663,553.65, 29,898,912.69 and 13,716,834.68 is: 18,931,263.50
Step by Step Solution
- Step 1: Write the proportion equation
21,663,553.65 : 29,898,912.69 = 13,716,834.68 : x - Step 2: Convert to fraction form
21,663,553.65/29,898,912.69 = 13,716,834.68/x - Step 3: Cross multiply
21,663,553.65x = 29,898,912.69 × 13,716,834.68 - Step 4: Simplify right side
21,663,553.65x = 410,118,442,494,548.62 - Step 5: Solve for x
x = 410,118,442,494,548.62/21,663,553.65 - Step 6: Final answer
x = 18,931,263.50
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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.