Finding the Fourth Proportional to 11,212,257.70, 15,707,789.60 and 11,212,257.70
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Solution
The fourth proportional to 11,212,257.70, 15,707,789.60 and 11,212,257.70 is: 15,707,789.60
Step by Step Solution
- Step 1: Write the proportion equation
11,212,257.70 : 15,707,789.60 = 11,212,257.70 : x - Step 2: Convert to fraction form
11,212,257.70/15,707,789.60 = 11,212,257.70/x - Step 3: Cross multiply
11,212,257.70x = 15,707,789.60 × 11,212,257.70 - Step 4: Simplify right side
11,212,257.70x = 176,119,784,892,579.91 - Step 5: Solve for x
x = 176,119,784,892,579.91/11,212,257.70 - Step 6: Final answer
x = 15,707,789.60
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.