Finding the Fourth Proportional to 19,987,961.54, 27,583,396.14 and 10,820,604.28
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Solution
The fourth proportional to 19,987,961.54, 27,583,396.14 and 10,820,604.28 is: 14,932,438.89
Step by Step Solution
- Step 1: Write the proportion equation
19,987,961.54 : 27,583,396.14 = 10,820,604.28 : x - Step 2: Convert to fraction form
19,987,961.54/27,583,396.14 = 10,820,604.28/x - Step 3: Cross multiply
19,987,961.54x = 27,583,396.14 × 10,820,604.28 - Step 4: Simplify right side
19,987,961.54x = 298,469,014,329,419.44 - Step 5: Solve for x
x = 298,469,014,329,419.44/19,987,961.54 - Step 6: Final answer
x = 14,932,438.89
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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.