Finding the Fourth Proportional to 20,122.74, 27,772.92 and 11,625.18
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Solution
The fourth proportional to 20,122.74, 27,772.92 and 11,625.18 is: 16,044.80
Step by Step Solution
- Step 1: Write the proportion equation
20,122.74 : 27,772.92 = 11,625.18 : x - Step 2: Convert to fraction form
20,122.74/27,772.92 = 11,625.18/x - Step 3: Cross multiply
20,122.74x = 27,772.92 × 11,625.18 - Step 4: Simplify right side
20,122.74x = 322,865,246.20 - Step 5: Solve for x
x = 322,865,246.20/20,122.74 - Step 6: Final answer
x = 16,044.80
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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.