Finding the Fourth Proportional to 12,231.99, 16,880.13 and 6,642.99
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Solution
The fourth proportional to 12,231.99, 16,880.13 and 6,642.99 is: 9,167.32
Step by Step Solution
- Step 1: Write the proportion equation
12,231.99 : 16,880.13 = 6,642.99 : x - Step 2: Convert to fraction form
12,231.99/16,880.13 = 6,642.99/x - Step 3: Cross multiply
12,231.99x = 16,880.13 × 6,642.99 - Step 4: Simplify right side
12,231.99x = 112,134,534.79 - Step 5: Solve for x
x = 112,134,534.79/12,231.99 - Step 6: Final answer
x = 9,167.32
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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.