Finding the Fourth Proportional to 11,477,958.30, 15,841,304.49 and 8,720,107.56
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Solution
The fourth proportional to 11,477,958.30, 15,841,304.49 and 8,720,107.56 is: 12,035,056.71
Step by Step Solution
- Step 1: Write the proportion equation
11,477,958.30 : 15,841,304.49 = 8,720,107.56 : x - Step 2: Convert to fraction form
11,477,958.30/15,841,304.49 = 8,720,107.56/x - Step 3: Cross multiply
11,477,958.30x = 15,841,304.49 × 8,720,107.56 - Step 4: Simplify right side
11,477,958.30x = 138,137,879,043,510.95 - Step 5: Solve for x
x = 138,137,879,043,510.95/11,477,958.30 - Step 6: Final answer
x = 12,035,056.71
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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.