Finding the Fourth Proportional to 19,958,968.54, 27,543,216.14 and 11,587,115.12
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Solution
The fourth proportional to 19,958,968.54, 27,543,216.14 and 11,587,115.12 is: 15,990,125.72
Step by Step Solution
- Step 1: Write the proportion equation
19,958,968.54 : 27,543,216.14 = 11,587,115.12 : x - Step 2: Convert to fraction form
19,958,968.54/27,543,216.14 = 11,587,115.12/x - Step 3: Cross multiply
19,958,968.54x = 27,543,216.14 × 11,587,115.12 - Step 4: Simplify right side
19,958,968.54x = 319,146,416,189,222 - Step 5: Solve for x
x = 319,146,416,189,222/19,958,968.54 - Step 6: Final answer
x = 15,990,125.72
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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.