Finding the Fourth Proportional to 20,207.71, 27,904.26 and 12,666.99
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Solution
The fourth proportional to 20,207.71, 27,904.26 and 12,666.99 is: 17,491.49
Step by Step Solution
- Step 1: Write the proportion equation
20,207.71 : 27,904.26 = 12,666.99 : x - Step 2: Convert to fraction form
20,207.71/27,904.26 = 12,666.99/x - Step 3: Cross multiply
20,207.71x = 27,904.26 × 12,666.99 - Step 4: Simplify right side
20,207.71x = 353,462,982.38 - Step 5: Solve for x
x = 353,462,982.38/20,207.71 - Step 6: Final answer
x = 17,491.49
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1.5x scale
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.