Finding the Fourth Proportional to 15,847.11, 21,868.99 and 8,676.99
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Solution
The fourth proportional to 15,847.11, 21,868.99 and 8,676.99 is: 11,974.23
Step by Step Solution
- Step 1: Write the proportion equation
15,847.11 : 21,868.99 = 8,676.99 : x - Step 2: Convert to fraction form
15,847.11/21,868.99 = 8,676.99/x - Step 3: Cross multiply
15,847.11x = 21,868.99 × 8,676.99 - Step 4: Simplify right side
15,847.11x = 189,756,985.85 - Step 5: Solve for x
x = 189,756,985.85/15,847.11 - Step 6: Final answer
x = 11,974.23
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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.