Finding the Fourth Proportional to 19,986.76, 27,581.61 and 11,034.82
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Solution
The fourth proportional to 19,986.76, 27,581.61 and 11,034.82 is: 15,227.99
Step by Step Solution
- Step 1: Write the proportion equation
19,986.76 : 27,581.61 = 11,034.82 : x - Step 2: Convert to fraction form
19,986.76/27,581.61 = 11,034.82/x - Step 3: Cross multiply
19,986.76x = 27,581.61 × 11,034.82 - Step 4: Simplify right side
19,986.76x = 304,358,101.66 - Step 5: Solve for x
x = 304,358,101.66/19,986.76 - Step 6: Final answer
x = 15,227.99
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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.