Finding the Fourth Proportional to 18,971,991.99, 28,453,728.77 and 8,727,012.36
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Solution
The fourth proportional to 18,971,991.99, 28,453,728.77 and 8,727,012.36 is: 13,088,559.32
Step by Step Solution
- Step 1: Write the proportion equation
18,971,991.99 : 28,453,728.77 = 8,727,012.36 : x - Step 2: Convert to fraction form
18,971,991.99/28,453,728.77 = 8,727,012.36/x - Step 3: Cross multiply
18,971,991.99x = 28,453,728.77 × 8,727,012.36 - Step 4: Simplify right side
18,971,991.99x = 248,316,042,620,242.53 - Step 5: Solve for x
x = 248,316,042,620,242.53/18,971,991.99 - Step 6: Final answer
x = 13,088,559.32
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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.