Finding the Fourth Proportional to 13,297,481.57, 18,349,733.70 and 7,715,295.63
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Solution
The fourth proportional to 13,297,481.57, 18,349,733.70 and 7,715,295.63 is: 10,646,649.11
Step by Step Solution
- Step 1: Write the proportion equation
13,297,481.57 : 18,349,733.70 = 7,715,295.63 : x - Step 2: Convert to fraction form
13,297,481.57/18,349,733.70 = 7,715,295.63/x - Step 3: Cross multiply
13,297,481.57x = 18,349,733.70 × 7,715,295.63 - Step 4: Simplify right side
13,297,481.57x = 141,573,620,227,273.72 - Step 5: Solve for x
x = 141,573,620,227,273.72/13,297,481.57 - Step 6: Final answer
x = 10,646,649.11
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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.