Finding the Fourth Proportional to 11,505.69, 15,866.16 and 10,835.99
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Solution
The fourth proportional to 11,505.69, 15,866.16 and 10,835.99 is: 14,942.65
Step by Step Solution
- Step 1: Write the proportion equation
11,505.69 : 15,866.16 = 10,835.99 : x - Step 2: Convert to fraction form
11,505.69/15,866.16 = 10,835.99/x - Step 3: Cross multiply
11,505.69x = 15,866.16 × 10,835.99 - Step 4: Simplify right side
11,505.69x = 171,925,471.77 - Step 5: Solve for x
x = 171,925,471.77/11,505.69 - Step 6: Final answer
x = 14,942.65
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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.