Finding the Fourth Proportional to 13,617,029.40, 20,449,163.70 and 7,239,737.40
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Solution
The fourth proportional to 13,617,029.40, 20,449,163.70 and 7,239,737.40 is: 10,872,163.88
Step by Step Solution
- Step 1: Write the proportion equation
13,617,029.40 : 20,449,163.70 = 7,239,737.40 : x - Step 2: Convert to fraction form
13,617,029.40/20,449,163.70 = 7,239,737.40/x - Step 3: Cross multiply
13,617,029.40x = 20,449,163.70 × 7,239,737.40 - Step 4: Simplify right side
13,617,029.40x = 148,046,575,237,612.38 - Step 5: Solve for x
x = 148,046,575,237,612.38/13,617,029.40 - Step 6: Final answer
x = 10,872,163.88
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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.