Finding the Fourth Proportional to 20,269,795.32, 27,971,971.80 and 10,977,289.92
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Solution
The fourth proportional to 20,269,795.32, 27,971,971.80 and 10,977,289.92 is: 15,148,472.85
Step by Step Solution
- Step 1: Write the proportion equation
20,269,795.32 : 27,971,971.80 = 10,977,289.92 : x - Step 2: Convert to fraction form
20,269,795.32/27,971,971.80 = 10,977,289.92/x - Step 3: Cross multiply
20,269,795.32x = 27,971,971.80 × 10,977,289.92 - Step 4: Simplify right side
20,269,795.32x = 307,056,444,082,664.25 - Step 5: Solve for x
x = 307,056,444,082,664.25/20,269,795.32 - Step 6: Final answer
x = 15,148,472.85
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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.