Finding the Fourth Proportional to 19,990,713.83, 27,588,250.74 and 11,170,379.21
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Solution
The fourth proportional to 19,990,713.83, 27,588,250.74 and 11,170,379.21 is: 15,415,718.77
Step by Step Solution
- Step 1: Write the proportion equation
19,990,713.83 : 27,588,250.74 = 11,170,379.21 : x - Step 2: Convert to fraction form
19,990,713.83/27,588,250.74 = 11,170,379.21/x - Step 3: Cross multiply
19,990,713.83x = 27,588,250.74 × 11,170,379.21 - Step 4: Simplify right side
19,990,713.83x = 308,171,222,506,363.12 - Step 5: Solve for x
x = 308,171,222,506,363.12/19,990,713.83 - Step 6: Final answer
x = 15,415,718.77
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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.