Finding the Fourth Proportional to 20,986,422.05, 28,960,874.41 and 11,438,786.65
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Solution
The fourth proportional to 20,986,422.05, 28,960,874.41 and 11,438,786.65 is: 15,785,314.08
Step by Step Solution
- Step 1: Write the proportion equation
20,986,422.05 : 28,960,874.41 = 11,438,786.65 : x - Step 2: Convert to fraction form
20,986,422.05/28,960,874.41 = 11,438,786.65/x - Step 3: Cross multiply
20,986,422.05x = 28,960,874.41 × 11,438,786.65 - Step 4: Simplify right side
20,986,422.05x = 331,277,263,573,434.62 - Step 5: Solve for x
x = 331,277,263,573,434.62/20,986,422.05 - Step 6: Final answer
x = 15,785,314.08
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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.