Finding the Fourth Proportional to 19,408,830.80, 29,109,163.80 and 9,815,190.80
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Solution
The fourth proportional to 19,408,830.80, 29,109,163.80 and 9,815,190.80 is: 14,720,721.70
Step by Step Solution
- Step 1: Write the proportion equation
19,408,830.80 : 29,109,163.80 = 9,815,190.80 : x - Step 2: Convert to fraction form
19,408,830.80/29,109,163.80 = 9,815,190.80/x - Step 3: Cross multiply
19,408,830.80x = 29,109,163.80 × 9,815,190.80 - Step 4: Simplify right side
19,408,830.80x = 285,711,996,725,453.06 - Step 5: Solve for x
x = 285,711,996,725,453.06/19,408,830.80 - Step 6: Final answer
x = 14,720,721.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.