Finding the Fourth Proportional to 13,481,683.92, 18,604,833.84 and 7,680,373.20
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Solution
The fourth proportional to 13,481,683.92, 18,604,833.84 and 7,680,373.20 is: 10,598,977.70
Step by Step Solution
- Step 1: Write the proportion equation
13,481,683.92 : 18,604,833.84 = 7,680,373.20 : x - Step 2: Convert to fraction form
13,481,683.92/18,604,833.84 = 7,680,373.20/x - Step 3: Cross multiply
13,481,683.92x = 18,604,833.84 × 7,680,373.20 - Step 4: Simplify right side
13,481,683.92x = 142,892,067,215,189.09 - Step 5: Solve for x
x = 142,892,067,215,189.09/13,481,683.92 - Step 6: Final answer
x = 10,598,977.70
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1.5x scale
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.