Finding the Fourth Proportional to 10,115.66, 13,959.09 and 6,338.99
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Solution
The fourth proportional to 10,115.66, 13,959.09 and 6,338.99 is: 8,747.48
Step by Step Solution
- Step 1: Write the proportion equation
10,115.66 : 13,959.09 = 6,338.99 : x - Step 2: Convert to fraction form
10,115.66/13,959.09 = 6,338.99/x - Step 3: Cross multiply
10,115.66x = 13,959.09 × 6,338.99 - Step 4: Simplify right side
10,115.66x = 88,486,462.12 - Step 5: Solve for x
x = 88,486,462.12/10,115.66 - Step 6: Final answer
x = 8,747.48
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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.