Finding the Fourth Proportional to 18,147,631.24, 27,221,421.96 and 8,426,928.65
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Solution
The fourth proportional to 18,147,631.24, 27,221,421.96 and 8,426,928.65 is: 12,640,381.41
Step by Step Solution
- Step 1: Write the proportion equation
18,147,631.24 : 27,221,421.96 = 8,426,928.65 : x - Step 2: Convert to fraction form
18,147,631.24/27,221,421.96 = 8,426,928.65/x - Step 3: Cross multiply
18,147,631.24x = 27,221,421.96 × 8,426,928.65 - Step 4: Simplify right side
18,147,631.24x = 229,392,980,608,463.16 - Step 5: Solve for x
x = 229,392,980,608,463.16/18,147,631.24 - Step 6: Final answer
x = 12,640,381.41
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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.