Finding the Fourth Proportional to 18,471,813.70, 27,707,720.55 and 18,219,871.30
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Solution
The fourth proportional to 18,471,813.70, 27,707,720.55 and 18,219,871.30 is: 27,329,806.95
Step by Step Solution
- Step 1: Write the proportion equation
18,471,813.70 : 27,707,720.55 = 18,219,871.30 : x - Step 2: Convert to fraction form
18,471,813.70/27,707,720.55 = 18,219,871.30/x - Step 3: Cross multiply
18,471,813.70x = 27,707,720.55 × 18,219,871.30 - Step 4: Simplify right side
18,471,813.70x = 504,831,102,437,365.25 - Step 5: Solve for x
x = 504,831,102,437,365.25/18,471,813.70 - Step 6: Final answer
x = 27,329,806.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.