Finding the Fourth Proportional to 38,817.57, 58,238.66 and 13,857.06
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Solution
The fourth proportional to 38,817.57, 58,238.66 and 13,857.06 is: 20,789.99
Step by Step Solution
- Step 1: Write the proportion equation
38,817.57 : 58,238.66 = 13,857.06 : x - Step 2: Convert to fraction form
38,817.57/58,238.66 = 13,857.06/x - Step 3: Cross multiply
38,817.57x = 58,238.66 × 13,857.06 - Step 4: Simplify right side
38,817.57x = 807,016,797.62 - Step 5: Solve for x
x = 807,016,797.62/38,817.57 - Step 6: Final answer
x = 20,789.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.