Finding the Fourth Proportional to 14,878.09, 20,531.07 and 8,163.55
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Solution
The fourth proportional to 14,878.09, 20,531.07 and 8,163.55 is: 11,265.32
Step by Step Solution
- Step 1: Write the proportion equation
14,878.09 : 20,531.07 = 8,163.55 : x - Step 2: Convert to fraction form
14,878.09/20,531.07 = 8,163.55/x - Step 3: Cross multiply
14,878.09x = 20,531.07 × 8,163.55 - Step 4: Simplify right side
14,878.09x = 167,606,395.78 - Step 5: Solve for x
x = 167,606,395.78/14,878.09 - Step 6: Final answer
x = 11,265.32
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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.