Finding the Fourth Proportional to 21,575,537.76, 29,775,147.12 and 12,408,187.84
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Solution
The fourth proportional to 21,575,537.76, 29,775,147.12 and 12,408,187.84 is: 17,123,819.70
Step by Step Solution
- Step 1: Write the proportion equation
21,575,537.76 : 29,775,147.12 = 12,408,187.84 : x - Step 2: Convert to fraction form
21,575,537.76/29,775,147.12 = 12,408,187.84/x - Step 3: Cross multiply
21,575,537.76x = 29,775,147.12 × 12,408,187.84 - Step 4: Simplify right side
21,575,537.76x = 369,455,618,428,595 - Step 5: Solve for x
x = 369,455,618,428,595/21,575,537.76 - Step 6: Final answer
x = 17,123,819.70
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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.