Finding the Fourth Proportional to 18,207,217.40, 27,321,323.70 and 6,855,812.60
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Solution
The fourth proportional to 18,207,217.40, 27,321,323.70 and 6,855,812.60 is: 10,287,671.70
Step by Step Solution
- Step 1: Write the proportion equation
18,207,217.40 : 27,321,323.70 = 6,855,812.60 : x - Step 2: Convert to fraction form
18,207,217.40/27,321,323.70 = 6,855,812.60/x - Step 3: Cross multiply
18,207,217.40x = 27,321,323.70 × 6,855,812.60 - Step 4: Simplify right side
18,207,217.40x = 187,309,875,271,138.59 - Step 5: Solve for x
x = 187,309,875,271,138.59/18,207,217.40 - Step 6: Final answer
x = 10,287,671.70
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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.