Finding the Fourth Proportional to 13,320,586.14, 18,380,443.48 and 7,811,881.23
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Solution
The fourth proportional to 13,320,586.14, 18,380,443.48 and 7,811,881.23 is: 10,779,243.49
Step by Step Solution
- Step 1: Write the proportion equation
13,320,586.14 : 18,380,443.48 = 7,811,881.23 : x - Step 2: Convert to fraction form
13,320,586.14/18,380,443.48 = 7,811,881.23/x - Step 3: Cross multiply
13,320,586.14x = 18,380,443.48 × 7,811,881.23 - Step 4: Simplify right side
13,320,586.14x = 143,585,841,420,487.91 - Step 5: Solve for x
x = 143,585,841,420,487.91/13,320,586.14 - Step 6: Final answer
x = 10,779,243.49
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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.