Finding the Fourth Proportional to 13,447,745.28, 18,555,350.40 and 8,015,742.72
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Solution
The fourth proportional to 13,447,745.28, 18,555,350.40 and 8,015,742.72 is: 11,060,212.09
Step by Step Solution
- Step 1: Write the proportion equation
13,447,745.28 : 18,555,350.40 = 8,015,742.72 : x - Step 2: Convert to fraction form
13,447,745.28/18,555,350.40 = 8,015,742.72/x - Step 3: Cross multiply
13,447,745.28x = 18,555,350.40 × 8,015,742.72 - Step 4: Simplify right side
13,447,745.28x = 148,734,914,885,849.06 - Step 5: Solve for x
x = 148,734,914,885,849.06/13,447,745.28 - Step 6: Final answer
x = 11,060,212.09
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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.