Finding the Fourth Proportional to 21,202.20, 29,256.93 and 11,769.75
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Solution
The fourth proportional to 21,202.20, 29,256.93 and 11,769.75 is: 16,241.09
Step by Step Solution
- Step 1: Write the proportion equation
21,202.20 : 29,256.93 = 11,769.75 : x - Step 2: Convert to fraction form
21,202.20/29,256.93 = 11,769.75/x - Step 3: Cross multiply
21,202.20x = 29,256.93 × 11,769.75 - Step 4: Simplify right side
21,202.20x = 344,346,751.87 - Step 5: Solve for x
x = 344,346,751.87/21,202.20 - Step 6: Final answer
x = 16,241.09
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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.