Finding the Fourth Proportional to 13,122,122.74, 18,108,540.60 and 7,320,905.38
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Solution
The fourth proportional to 13,122,122.74, 18,108,540.60 and 7,320,905.38 is: 10,102,855.68
Step by Step Solution
- Step 1: Write the proportion equation
13,122,122.74 : 18,108,540.60 = 7,320,905.38 : x - Step 2: Convert to fraction form
13,122,122.74/18,108,540.60 = 7,320,905.38/x - Step 3: Cross multiply
13,122,122.74x = 18,108,540.60 × 7,320,905.38 - Step 4: Simplify right side
13,122,122.74x = 132,570,912,302,488.44 - Step 5: Solve for x
x = 132,570,912,302,488.44/13,122,122.74 - Step 6: Final answer
x = 10,102,855.68
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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.