Finding the Fourth Proportional to 20,409,765.84, 28,165,478.38 and 11,242,408.59
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Solution
The fourth proportional to 20,409,765.84, 28,165,478.38 and 11,242,408.59 is: 15,514,524.69
Step by Step Solution
- Step 1: Write the proportion equation
20,409,765.84 : 28,165,478.38 = 11,242,408.59 : x - Step 2: Convert to fraction form
20,409,765.84/28,165,478.38 = 11,242,408.59/x - Step 3: Cross multiply
20,409,765.84x = 28,165,478.38 × 11,242,408.59 - Step 4: Simplify right side
20,409,765.84x = 316,647,816,080,771.25 - Step 5: Solve for x
x = 316,647,816,080,771.25/20,409,765.84 - Step 6: Final answer
x = 15,514,524.69
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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.