Finding the Fourth Proportional to 18,651,638.20, 27,977,457.30 and 11,074,703.80
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Solution
The fourth proportional to 18,651,638.20, 27,977,457.30 and 11,074,703.80 is: 16,612,055.70
Step by Step Solution
- Step 1: Write the proportion equation
18,651,638.20 : 27,977,457.30 = 11,074,703.80 : x - Step 2: Convert to fraction form
18,651,638.20/27,977,457.30 = 11,074,703.80/x - Step 3: Cross multiply
18,651,638.20x = 27,977,457.30 × 11,074,703.80 - Step 4: Simplify right side
18,651,638.20x = 309,842,052,674,647.75 - Step 5: Solve for x
x = 309,842,052,674,647.75/18,651,638.20 - Step 6: Final answer
x = 16,612,055.70
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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.