Finding the Fourth Proportional to 28,738.60, 39,660.26 and 16,163.08
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Solution
The fourth proportional to 28,738.60, 39,660.26 and 16,163.08 is: 22,305.61
Step by Step Solution
- Step 1: Write the proportion equation
28,738.60 : 39,660.26 = 16,163.08 : x - Step 2: Convert to fraction form
28,738.60/39,660.26 = 16,163.08/x - Step 3: Cross multiply
28,738.60x = 39,660.26 × 16,163.08 - Step 4: Simplify right side
28,738.60x = 641,031,955.20 - Step 5: Solve for x
x = 641,031,955.20/28,738.60 - Step 6: Final answer
x = 22,305.61
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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.