Finding the Fourth Proportional to 27,283.20, 40,911.36 and 8,812.80
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Solution
The fourth proportional to 27,283.20, 40,911.36 and 8,812.80 is: 13,214.86
Step by Step Solution
- Step 1: Write the proportion equation
27,283.20 : 40,911.36 = 8,812.80 : x - Step 2: Convert to fraction form
27,283.20/40,911.36 = 8,812.80/x - Step 3: Cross multiply
27,283.20x = 40,911.36 × 8,812.80 - Step 4: Simplify right side
27,283.20x = 360,543,633.41 - Step 5: Solve for x
x = 360,543,633.41/27,283.20 - Step 6: Final answer
x = 13,214.86
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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.