Finding the Fourth Proportional to 18,083,812.60, 27,128,707.80 and 8,378,125.30
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Solution
The fourth proportional to 18,083,812.60, 27,128,707.80 and 8,378,125.30 is: 12,568,572.69
Step by Step Solution
- Step 1: Write the proportion equation
18,083,812.60 : 27,128,707.80 = 8,378,125.30 : x - Step 2: Convert to fraction form
18,083,812.60/27,128,707.80 = 8,378,125.30/x - Step 3: Cross multiply
18,083,812.60x = 27,128,707.80 × 8,378,125.30 - Step 4: Simplify right side
18,083,812.60x = 227,287,713,175,487.34 - Step 5: Solve for x
x = 227,287,713,175,487.34/18,083,812.60 - Step 6: Final answer
x = 12,568,572.69
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.