Finding the Fourth Proportional to 15,132,900.79, 20,883,907.11 and 8,257,760.11
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Solution
The fourth proportional to 15,132,900.79, 20,883,907.11 and 8,257,760.11 is: 11,395,983.99
Step by Step Solution
- Step 1: Write the proportion equation
15,132,900.79 : 20,883,907.11 = 8,257,760.11 : x - Step 2: Convert to fraction form
15,132,900.79/20,883,907.11 = 8,257,760.11/x - Step 3: Cross multiply
15,132,900.79x = 20,883,907.11 × 8,257,760.11 - Step 4: Simplify right side
15,132,900.79x = 172,454,295,073,903.38 - Step 5: Solve for x
x = 172,454,295,073,903.38/15,132,900.79 - Step 6: Final answer
x = 11,395,983.99
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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.