Finding the Fourth Proportional to 13,122,122.45, 18,108,540.27 and 7,320,905.09
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Solution
The fourth proportional to 13,122,122.45, 18,108,540.27 and 7,320,905.09 is: 10,102,855.32
Step by Step Solution
- Step 1: Write the proportion equation
13,122,122.45 : 18,108,540.27 = 7,320,905.09 : x - Step 2: Convert to fraction form
13,122,122.45/18,108,540.27 = 7,320,905.09/x - Step 3: Cross multiply
13,122,122.45x = 18,108,540.27 × 7,320,905.09 - Step 4: Simplify right side
13,122,122.45x = 132,570,904,598,508.45 - Step 5: Solve for x
x = 132,570,904,598,508.45/13,122,122.45 - Step 6: Final answer
x = 10,102,855.32
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1.5x scale
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.