Finding the Fourth Proportional to 18,936.26, 26,132.21 and 10,438.70
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Solution
The fourth proportional to 18,936.26, 26,132.21 and 10,438.70 is: 14,405.49
Step by Step Solution
- Step 1: Write the proportion equation
18,936.26 : 26,132.21 = 10,438.70 : x - Step 2: Convert to fraction form
18,936.26/26,132.21 = 10,438.70/x - Step 3: Cross multiply
18,936.26x = 26,132.21 × 10,438.70 - Step 4: Simplify right side
18,936.26x = 272,786,117.67 - Step 5: Solve for x
x = 272,786,117.67/18,936.26 - Step 6: Final answer
x = 14,405.49
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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.