Finding the Fourth Proportional to 20,188,841.56, 27,860,459.62 and 11,021,484.32
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Solution
The fourth proportional to 20,188,841.56, 27,860,459.62 and 11,021,484.32 is: 15,209,570.99
Step by Step Solution
- Step 1: Write the proportion equation
20,188,841.56 : 27,860,459.62 = 11,021,484.32 : x - Step 2: Convert to fraction form
20,188,841.56/27,860,459.62 = 11,021,484.32/x - Step 3: Cross multiply
20,188,841.56x = 27,860,459.62 × 11,021,484.32 - Step 4: Simplify right side
20,188,841.56x = 307,063,618,849,823.19 - Step 5: Solve for x
x = 307,063,618,849,823.19/20,188,841.56 - Step 6: Final answer
x = 15,209,570.99
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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.