Finding the Fourth Proportional to 20,117,535.21, 27,761,427.99 and 11,415,188.84
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Solution
The fourth proportional to 20,117,535.21, 27,761,427.99 and 11,415,188.84 is: 15,752,523.33
Step by Step Solution
- Step 1: Write the proportion equation
20,117,535.21 : 27,761,427.99 = 11,415,188.84 : x - Step 2: Convert to fraction form
20,117,535.21/27,761,427.99 = 11,415,188.84/x - Step 3: Cross multiply
20,117,535.21x = 27,761,427.99 × 11,415,188.84 - Step 4: Simplify right side
20,117,535.21x = 316,901,942,835,104.50 - Step 5: Solve for x
x = 316,901,942,835,104.50/20,117,535.21 - Step 6: Final answer
x = 15,752,523.33
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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.