Finding the Fourth Proportional to 18,413,931.20, 27,609,837.60 and 9,455,979.20
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Solution
The fourth proportional to 18,413,931.20, 27,609,837.60 and 9,455,979.20 is: 14,178,289.65
Step by Step Solution
- Step 1: Write the proportion equation
18,413,931.20 : 27,609,837.60 = 9,455,979.20 : x - Step 2: Convert to fraction form
18,413,931.20/27,609,837.60 = 9,455,979.20/x - Step 3: Cross multiply
18,413,931.20x = 27,609,837.60 × 9,455,979.20 - Step 4: Simplify right side
18,413,931.20x = 261,078,050,060,977.91 - Step 5: Solve for x
x = 261,078,050,060,977.91/18,413,931.20 - Step 6: Final answer
x = 14,178,289.65
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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.