Finding the Fourth Proportional to 15,178,847.35, 20,946,836.90 and 8,303,329.41
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Solution
The fourth proportional to 15,178,847.35, 20,946,836.90 and 8,303,329.41 is: 11,458,609.66
Step by Step Solution
- Step 1: Write the proportion equation
15,178,847.35 : 20,946,836.90 = 8,303,329.41 : x - Step 2: Convert to fraction form
15,178,847.35/20,946,836.90 = 8,303,329.41/x - Step 3: Cross multiply
15,178,847.35x = 20,946,836.90 × 8,303,329.41 - Step 4: Simplify right side
15,178,847.35x = 173,928,486,836,726.59 - Step 5: Solve for x
x = 173,928,486,836,726.59/15,178,847.35 - Step 6: Final answer
x = 11,458,609.66
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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.