Finding the Fourth Proportional to 20,211,459.21, 27,891,886.31 and 11,044,101.96
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Solution
The fourth proportional to 20,211,459.21, 27,891,886.31 and 11,044,101.96 is: 15,240,900.38
Step by Step Solution
- Step 1: Write the proportion equation
20,211,459.21 : 27,891,886.31 = 11,044,101.96 : x - Step 2: Convert to fraction form
20,211,459.21/27,891,886.31 = 11,044,101.96/x - Step 3: Cross multiply
20,211,459.21x = 27,891,886.31 × 11,044,101.96 - Step 4: Simplify right side
20,211,459.21x = 308,040,836,264,368.19 - Step 5: Solve for x
x = 308,040,836,264,368.19/20,211,459.21 - Step 6: Final answer
x = 15,240,900.38
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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.