Finding the Fourth Proportional to 18,285,216.92, 27,432,393.84 and 12,904,370.72
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Solution
The fourth proportional to 18,285,216.92, 27,432,393.84 and 12,904,370.72 is: 19,359,780.17
Step by Step Solution
- Step 1: Write the proportion equation
18,285,216.92 : 27,432,393.84 = 12,904,370.72 : x - Step 2: Convert to fraction form
18,285,216.92/27,432,393.84 = 12,904,370.72/x - Step 3: Cross multiply
18,285,216.92x = 27,432,393.84 × 12,904,370.72 - Step 4: Simplify right side
18,285,216.92x = 353,997,779,848,404.38 - Step 5: Solve for x
x = 353,997,779,848,404.38/18,285,216.92 - Step 6: Final answer
x = 19,359,780.17
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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.