Finding the Fourth Proportional to 18,717,868.80, 28,084,676.40 and 10,204,315.20
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Solution
The fourth proportional to 18,717,868.80, 28,084,676.40 and 10,204,315.20 is: 15,310,764.99
Step by Step Solution
- Step 1: Write the proportion equation
18,717,868.80 : 28,084,676.40 = 10,204,315.20 : x - Step 2: Convert to fraction form
18,717,868.80/28,084,676.40 = 10,204,315.20/x - Step 3: Cross multiply
18,717,868.80x = 28,084,676.40 × 10,204,315.20 - Step 4: Simplify right side
18,717,868.80x = 286,584,890,275,601.25 - Step 5: Solve for x
x = 286,584,890,275,601.25/18,717,868.80 - Step 6: Final answer
x = 15,310,764.99
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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.