Finding the Fourth Proportional to 19,686,529.70, 27,164,147.01 and 13,149,674.18
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Solution
The fourth proportional to 19,686,529.70, 27,164,147.01 and 13,149,674.18 is: 18,144,370.19
Step by Step Solution
- Step 1: Write the proportion equation
19,686,529.70 : 27,164,147.01 = 13,149,674.18 : x - Step 2: Convert to fraction form
19,686,529.70/27,164,147.01 = 13,149,674.18/x - Step 3: Cross multiply
19,686,529.70x = 27,164,147.01 × 13,149,674.18 - Step 4: Simplify right side
19,686,529.70x = 357,199,682,559,121.19 - Step 5: Solve for x
x = 357,199,682,559,121.19/19,686,529.70 - Step 6: Final answer
x = 18,144,370.19
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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.