Finding the Fourth Proportional to 39,647.99, 59,472 and 11,945.99
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Solution
The fourth proportional to 39,647.99, 59,472 and 11,945.99 is: 17,918.99
Step by Step Solution
- Step 1: Write the proportion equation
39,647.99 : 59,472 = 11,945.99 : x - Step 2: Convert to fraction form
39,647.99/59,472 = 11,945.99/x - Step 3: Cross multiply
39,647.99x = 59,472 × 11,945.99 - Step 4: Simplify right side
39,647.99x = 710,451,917.28 - Step 5: Solve for x
x = 710,451,917.28/39,647.99 - Step 6: Final answer
x = 17,918.99
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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.