Finding the Fourth Proportional to 20,188,839.90, 27,860,457.34 and 11,021,482.65
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Solution
The fourth proportional to 20,188,839.90, 27,860,457.34 and 11,021,482.65 is: 15,209,568.69
Step by Step Solution
- Step 1: Write the proportion equation
20,188,839.90 : 27,860,457.34 = 11,021,482.65 : x - Step 2: Convert to fraction form
20,188,839.90/27,860,457.34 = 11,021,482.65/x - Step 3: Cross multiply
20,188,839.90x = 27,860,457.34 × 11,021,482.65 - Step 4: Simplify right side
20,188,839.90x = 307,063,547,291,463.44 - Step 5: Solve for x
x = 307,063,547,291,463.44/20,188,839.90 - Step 6: Final answer
x = 15,209,568.69
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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.