Finding the Fourth Proportional to 13,431,190.42, 18,534,865.47 and 7,470,557.02
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Solution
The fourth proportional to 13,431,190.42, 18,534,865.47 and 7,470,557.02 is: 10,309,270.07
Step by Step Solution
- Step 1: Write the proportion equation
13,431,190.42 : 18,534,865.47 = 7,470,557.02 : x - Step 2: Convert to fraction form
13,431,190.42/18,534,865.47 = 7,470,557.02/x - Step 3: Cross multiply
13,431,190.42x = 18,534,865.47 × 7,470,557.02 - Step 4: Simplify right side
13,431,190.42x = 138,465,769,351,664.08 - Step 5: Solve for x
x = 138,465,769,351,664.08/13,431,190.42 - Step 6: Final answer
x = 10,309,270.07
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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.