Finding the Fourth Proportional to 20,188,841.97, 27,860,460.18 and 11,021,484.72
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Solution
The fourth proportional to 20,188,841.97, 27,860,460.18 and 11,021,484.72 is: 15,209,571.54
Step by Step Solution
- Step 1: Write the proportion equation
20,188,841.97 : 27,860,460.18 = 11,021,484.72 : x - Step 2: Convert to fraction form
20,188,841.97/27,860,460.18 = 11,021,484.72/x - Step 3: Cross multiply
20,188,841.97x = 27,860,460.18 × 11,021,484.72 - Step 4: Simplify right side
20,188,841.97x = 307,063,636,166,038.44 - Step 5: Solve for x
x = 307,063,636,166,038.44/20,188,841.97 - Step 6: Final answer
x = 15,209,571.54
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1.5x scale
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.