Finding the Fourth Proportional to 15,161.97, 20,922.99 and 8,447.28
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Solution
The fourth proportional to 15,161.97, 20,922.99 and 8,447.28 is: 11,656.95
Step by Step Solution
- Step 1: Write the proportion equation
15,161.97 : 20,922.99 = 8,447.28 : x - Step 2: Convert to fraction form
15,161.97/20,922.99 = 8,447.28/x - Step 3: Cross multiply
15,161.97x = 20,922.99 × 8,447.28 - Step 4: Simplify right side
15,161.97x = 176,742,354.97 - Step 5: Solve for x
x = 176,742,354.97/15,161.97 - Step 6: Final answer
x = 11,656.95
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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.