Finding the Fourth Proportional to 12,307.75, 16,984.70 and 6,718.75
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Solution
The fourth proportional to 12,307.75, 16,984.70 and 6,718.75 is: 9,271.88
Step by Step Solution
- Step 1: Write the proportion equation
12,307.75 : 16,984.70 = 6,718.75 : x - Step 2: Convert to fraction form
12,307.75/16,984.70 = 6,718.75/x - Step 3: Cross multiply
12,307.75x = 16,984.70 × 6,718.75 - Step 4: Simplify right side
12,307.75x = 114,115,953.13 - Step 5: Solve for x
x = 114,115,953.13/12,307.75 - Step 6: Final answer
x = 9,271.88
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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.