Finding the Fourth Proportional to 13,279,815.90, 18,325,897.08 and 8,122,798.62
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Solution
The fourth proportional to 13,279,815.90, 18,325,897.08 and 8,122,798.62 is: 11,209,309.88
Step by Step Solution
- Step 1: Write the proportion equation
13,279,815.90 : 18,325,897.08 = 8,122,798.62 : x - Step 2: Convert to fraction form
13,279,815.90/18,325,897.08 = 8,122,798.62/x - Step 3: Cross multiply
13,279,815.90x = 18,325,897.08 × 8,122,798.62 - Step 4: Simplify right side
13,279,815.90x = 148,857,571,511,686.03 - Step 5: Solve for x
x = 148,857,571,511,686.03/13,279,815.90 - Step 6: Final answer
x = 11,209,309.88
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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.