Finding the Fourth Proportional to 13,512,693.28, 18,647,526.78 and 7,317,788.08
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Solution
The fourth proportional to 13,512,693.28, 18,647,526.78 and 7,317,788.08 is: 10,098,552.99
Step by Step Solution
- Step 1: Write the proportion equation
13,512,693.28 : 18,647,526.78 = 7,317,788.08 : x - Step 2: Convert to fraction form
13,512,693.28/18,647,526.78 = 7,317,788.08/x - Step 3: Cross multiply
13,512,693.28x = 18,647,526.78 × 7,317,788.08 - Step 4: Simplify right side
13,512,693.28x = 136,458,649,192,164.80 - Step 5: Solve for x
x = 136,458,649,192,164.80/13,512,693.28 - Step 6: Final answer
x = 10,098,552.99
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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.