Finding the Fourth Proportional to 20,966,836.12, 28,929,446.76 and 11,796,132.76
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Solution
The fourth proportional to 20,966,836.12, 28,929,446.76 and 11,796,132.76 is: 16,275,969.95
Step by Step Solution
- Step 1: Write the proportion equation
20,966,836.12 : 28,929,446.76 = 11,796,132.76 : x - Step 2: Convert to fraction form
20,966,836.12/28,929,446.76 = 11,796,132.76/x - Step 3: Cross multiply
20,966,836.12x = 28,929,446.76 × 11,796,132.76 - Step 4: Simplify right side
20,966,836.12x = 341,255,594,654,311.88 - Step 5: Solve for x
x = 341,255,594,654,311.88/20,966,836.12 - Step 6: Final answer
x = 16,275,969.95
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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.