Finding the Fourth Proportional to 13,148,389.36, 18,144,429.24 and 7,347,218.68
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Solution
The fourth proportional to 13,148,389.36, 18,144,429.24 and 7,347,218.68 is: 10,138,967.28
Step by Step Solution
- Step 1: Write the proportion equation
13,148,389.36 : 18,144,429.24 = 7,347,218.68 : x - Step 2: Convert to fraction form
13,148,389.36/18,144,429.24 = 7,347,218.68/x - Step 3: Cross multiply
13,148,389.36x = 18,144,429.24 × 7,347,218.68 - Step 4: Simplify right side
13,148,389.36x = 133,311,089,450,066.19 - Step 5: Solve for x
x = 133,311,089,450,066.19/13,148,389.36 - Step 6: Final answer
x = 10,138,967.28
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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.