Finding the Fourth Proportional to 20,113.09, 27,757.80 and 11,162.34
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Solution
The fourth proportional to 20,113.09, 27,757.80 and 11,162.34 is: 15,404.99
Step by Step Solution
- Step 1: Write the proportion equation
20,113.09 : 27,757.80 = 11,162.34 : x - Step 2: Convert to fraction form
20,113.09/27,757.80 = 11,162.34/x - Step 3: Cross multiply
20,113.09x = 27,757.80 × 11,162.34 - Step 4: Simplify right side
20,113.09x = 309,842,001.25 - Step 5: Solve for x
x = 309,842,001.25/20,113.09 - Step 6: Final answer
x = 15,404.99
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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.