Finding the Fourth Proportional to 20,408,091.54, 28,163,164.75 and 11,240,734.29
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Solution
The fourth proportional to 20,408,091.54, 28,163,164.75 and 11,240,734.29 is: 15,512,212.45
Step by Step Solution
- Step 1: Write the proportion equation
20,408,091.54 : 28,163,164.75 = 11,240,734.29 : x - Step 2: Convert to fraction form
20,408,091.54/28,163,164.75 = 11,240,734.29/x - Step 3: Cross multiply
20,408,091.54x = 28,163,164.75 × 11,240,734.29 - Step 4: Simplify right side
20,408,091.54x = 316,574,651,720,244.25 - Step 5: Solve for x
x = 316,574,651,720,244.25/20,408,091.54 - Step 6: Final answer
x = 15,512,212.45
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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.