Finding the Fourth Proportional to 20,576,937.60, 28,394,789.76 and 11,409,240.96
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Solution
The fourth proportional to 20,576,937.60, 28,394,789.76 and 11,409,240.96 is: 15,743,985.07
Step by Step Solution
- Step 1: Write the proportion equation
20,576,937.60 : 28,394,789.76 = 11,409,240.96 : x - Step 2: Convert to fraction form
20,576,937.60/28,394,789.76 = 11,409,240.96/x - Step 3: Cross multiply
20,576,937.60x = 28,394,789.76 × 11,409,240.96 - Step 4: Simplify right side
20,576,937.60x = 323,962,998,380,380.62 - Step 5: Solve for x
x = 323,962,998,380,380.62/20,576,937.60 - Step 6: Final answer
x = 15,743,985.07
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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.