Finding the Fourth Proportional to 20,435,926.86, 28,201,373.71 and 11,143,474.12
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Solution
The fourth proportional to 20,435,926.86, 28,201,373.71 and 11,143,474.12 is: 15,377,882.31
Step by Step Solution
- Step 1: Write the proportion equation
20,435,926.86 : 28,201,373.71 = 11,143,474.12 : x - Step 2: Convert to fraction form
20,435,926.86/28,201,373.71 = 11,143,474.12/x - Step 3: Cross multiply
20,435,926.86x = 28,201,373.71 × 11,143,474.12 - Step 4: Simplify right side
20,435,926.86x = 314,261,278,093,226.44 - Step 5: Solve for x
x = 314,261,278,093,226.44/20,435,926.86 - Step 6: Final answer
x = 15,377,882.31
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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.