Finding the Fourth Proportional to 28,378,191.33, 39,161,902.75 and 15,325,449.09
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Solution
The fourth proportional to 28,378,191.33, 39,161,902.75 and 15,325,449.09 is: 21,149,119.05
Step by Step Solution
- Step 1: Write the proportion equation
28,378,191.33 : 39,161,902.75 = 15,325,449.09 : x - Step 2: Convert to fraction form
28,378,191.33/39,161,902.75 = 15,325,449.09/x - Step 3: Cross multiply
28,378,191.33x = 39,161,902.75 × 15,325,449.09 - Step 4: Simplify right side
28,378,191.33x = 600,173,746,971,199.50 - Step 5: Solve for x
x = 600,173,746,971,199.50/28,378,191.33 - Step 6: Final answer
x = 21,149,119.05
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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.