Finding the Fourth Proportional to 20,122,170.24, 27,787,042.56 and 12,782,378.88
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Solution
The fourth proportional to 20,122,170.24, 27,787,042.56 and 12,782,378.88 is: 17,651,401.50
Step by Step Solution
- Step 1: Write the proportion equation
20,122,170.24 : 27,787,042.56 = 12,782,378.88 : x - Step 2: Convert to fraction form
20,122,170.24/27,787,042.56 = 12,782,378.88/x - Step 3: Cross multiply
20,122,170.24x = 27,787,042.56 × 12,782,378.88 - Step 4: Simplify right side
20,122,170.24x = 355,184,505,956,605.12 - Step 5: Solve for x
x = 355,184,505,956,605.12/20,122,170.24 - Step 6: Final answer
x = 17,651,401.50
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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.