Finding the Fourth Proportional to 13,421,874.06, 18,522,198.25 and 7,620,655.79
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Solution
The fourth proportional to 13,421,874.06, 18,522,198.25 and 7,620,655.79 is: 10,516,511.83
Step by Step Solution
- Step 1: Write the proportion equation
13,421,874.06 : 18,522,198.25 = 7,620,655.79 : x - Step 2: Convert to fraction form
13,421,874.06/18,522,198.25 = 7,620,655.79/x - Step 3: Cross multiply
13,421,874.06x = 18,522,198.25 × 7,620,655.79 - Step 4: Simplify right side
13,421,874.06x = 141,151,297,364,644.22 - Step 5: Solve for x
x = 141,151,297,364,644.22/13,421,874.06 - Step 6: Final answer
x = 10,516,511.83
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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.