Finding the Fourth Proportional to 13,189,548.18, 18,201,376.68 and 7,388,537.56
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Solution
The fourth proportional to 13,189,548.18, 18,201,376.68 and 7,388,537.56 is: 10,196,069.90
Step by Step Solution
- Step 1: Write the proportion equation
13,189,548.18 : 18,201,376.68 = 7,388,537.56 : x - Step 2: Convert to fraction form
13,189,548.18/18,201,376.68 = 7,388,537.56/x - Step 3: Cross multiply
13,189,548.18x = 18,201,376.68 × 7,388,537.56 - Step 4: Simplify right side
13,189,548.18x = 134,481,555,243,888.09 - Step 5: Solve for x
x = 134,481,555,243,888.09/13,189,548.18 - Step 6: Final answer
x = 10,196,069.90
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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.