Finding the Fourth Proportional to 18,502,163.70, 27,712,827.27 and 7,686,672.18
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Solution
The fourth proportional to 18,502,163.70, 27,712,827.27 and 7,686,672.18 is: 11,513,216.61
Step by Step Solution
- Step 1: Write the proportion equation
18,502,163.70 : 27,712,827.27 = 7,686,672.18 : x - Step 2: Convert to fraction form
18,502,163.70/27,712,827.27 = 7,686,672.18/x - Step 3: Cross multiply
18,502,163.70x = 27,712,827.27 × 7,686,672.18 - Step 4: Simplify right side
18,502,163.70x = 213,019,418,405,454.34 - Step 5: Solve for x
x = 213,019,418,405,454.34/18,502,163.70 - Step 6: Final answer
x = 11,513,216.61
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.