Finding the Fourth Proportional to 13,451,660.20, 20,177,490.30 and 12,176,201.80
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Solution
The fourth proportional to 13,451,660.20, 20,177,490.30 and 12,176,201.80 is: 18,264,302.70
Step by Step Solution
- Step 1: Write the proportion equation
13,451,660.20 : 20,177,490.30 = 12,176,201.80 : x - Step 2: Convert to fraction form
13,451,660.20/20,177,490.30 = 12,176,201.80/x - Step 3: Cross multiply
13,451,660.20x = 20,177,490.30 × 12,176,201.80 - Step 4: Simplify right side
13,451,660.20x = 245,685,193,710,342.56 - Step 5: Solve for x
x = 245,685,193,710,342.56/13,451,660.20 - Step 6: Final answer
x = 18,264,302.70
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1.5x scale
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.