Finding the Fourth Proportional to 13,342,231.60, 18,412,270.84 and 7,230,660.12
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Solution
The fourth proportional to 13,342,231.60, 18,412,270.84 and 7,230,660.12 is: 9,978,306.21
Step by Step Solution
- Step 1: Write the proportion equation
13,342,231.60 : 18,412,270.84 = 7,230,660.12 : x - Step 2: Convert to fraction form
13,342,231.60/18,412,270.84 = 7,230,660.12/x - Step 3: Cross multiply
13,342,231.60x = 18,412,270.84 × 7,230,660.12 - Step 4: Simplify right side
13,342,231.60x = 133,132,872,481,426.91 - Step 5: Solve for x
x = 133,132,872,481,426.91/13,342,231.60 - Step 6: Final answer
x = 9,978,306.21
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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.