Finding the Fourth Proportional to 20,497,628.80, 28,286,230.08 and 11,330,035.84
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Solution
The fourth proportional to 20,497,628.80, 28,286,230.08 and 11,330,035.84 is: 15,635,174.38
Step by Step Solution
- Step 1: Write the proportion equation
20,497,628.80 : 28,286,230.08 = 11,330,035.84 : x - Step 2: Convert to fraction form
20,497,628.80/28,286,230.08 = 11,330,035.84/x - Step 3: Cross multiply
20,497,628.80x = 28,286,230.08 × 11,330,035.84 - Step 4: Simplify right side
20,497,628.80x = 320,484,000,584,886.06 - Step 5: Solve for x
x = 320,484,000,584,886.06/20,497,628.80 - Step 6: Final answer
x = 15,635,174.38
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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.