Finding the Fourth Proportional to 14,912.99, 20,579.97 and 8,539.68
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Solution
The fourth proportional to 14,912.99, 20,579.97 and 8,539.68 is: 11,784.78
Step by Step Solution
- Step 1: Write the proportion equation
14,912.99 : 20,579.97 = 8,539.68 : x - Step 2: Convert to fraction form
14,912.99/20,579.97 = 8,539.68/x - Step 3: Cross multiply
14,912.99x = 20,579.97 × 8,539.68 - Step 4: Simplify right side
14,912.99x = 175,746,358.21 - Step 5: Solve for x
x = 175,746,358.21/14,912.99 - Step 6: Final answer
x = 11,784.78
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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.