Finding the Fourth Proportional to 19,994,771.20, 29,990,660.22 and 7,215,275.45
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Solution
The fourth proportional to 19,994,771.20, 29,990,660.22 and 7,215,275.45 is: 10,822,373.12
Step by Step Solution
- Step 1: Write the proportion equation
19,994,771.20 : 29,990,660.22 = 7,215,275.45 : x - Step 2: Convert to fraction form
19,994,771.20/29,990,660.22 = 7,215,275.45/x - Step 3: Cross multiply
19,994,771.20x = 29,990,660.22 × 7,215,275.45 - Step 4: Simplify right side
19,994,771.20x = 216,390,874,404,226.56 - Step 5: Solve for x
x = 216,390,874,404,226.56/19,994,771.20 - Step 6: Final answer
x = 10,822,373.12
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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.