Finding the Fourth Proportional to 15,255,261.05, 21,052,414.73 and 8,286,074.66
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Solution
The fourth proportional to 15,255,261.05, 21,052,414.73 and 8,286,074.66 is: 11,434,866.95
Step by Step Solution
- Step 1: Write the proportion equation
15,255,261.05 : 21,052,414.73 = 8,286,074.66 : x - Step 2: Convert to fraction form
15,255,261.05/21,052,414.73 = 8,286,074.66/x - Step 3: Cross multiply
15,255,261.05x = 21,052,414.73 × 8,286,074.66 - Step 4: Simplify right side
15,255,261.05x = 174,441,880,299,409.97 - Step 5: Solve for x
x = 174,441,880,299,409.97/15,255,261.05 - Step 6: Final answer
x = 11,434,866.95
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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.