Finding the Fourth Proportional to 13,921,261.51, 19,211,471.99 and 7,809,821.23
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Solution
The fourth proportional to 13,921,261.51, 19,211,471.99 and 7,809,821.23 is: 10,777,626.85
Step by Step Solution
- Step 1: Write the proportion equation
13,921,261.51 : 19,211,471.99 = 7,809,821.23 : x - Step 2: Convert to fraction form
13,921,261.51/19,211,471.99 = 7,809,821.23/x - Step 3: Cross multiply
13,921,261.51x = 19,211,471.99 × 7,809,821.23 - Step 4: Simplify right side
13,921,261.51x = 150,038,161,768,003.25 - Step 5: Solve for x
x = 150,038,161,768,003.25/13,921,261.51 - Step 6: Final answer
x = 10,777,626.85
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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.