Finding the Fourth Proportional to 20,627,868.38, 28,467,344.09 and 11,460,511.13
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Solution
The fourth proportional to 20,627,868.38, 28,467,344.09 and 11,460,511.13 is: 15,815,997.45
Step by Step Solution
- Step 1: Write the proportion equation
20,627,868.38 : 28,467,344.09 = 11,460,511.13 : x - Step 2: Convert to fraction form
20,627,868.38/28,467,344.09 = 11,460,511.13/x - Step 3: Cross multiply
20,627,868.38x = 28,467,344.09 × 11,460,511.13 - Step 4: Simplify right side
20,627,868.38x = 326,250,313,671,299.31 - Step 5: Solve for x
x = 326,250,313,671,299.31/20,627,868.38 - Step 6: Final answer
x = 15,815,997.45
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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.