Finding the Fourth Proportional to 13,408,992.40, 18,491,545.20 and 9,008,659.84
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Solution
The fourth proportional to 13,408,992.40, 18,491,545.20 and 9,008,659.84 is: 12,423,307.86
Step by Step Solution
- Step 1: Write the proportion equation
13,408,992.40 : 18,491,545.20 = 9,008,659.84 : x - Step 2: Convert to fraction form
13,408,992.40/18,491,545.20 = 9,008,659.84/x - Step 3: Cross multiply
13,408,992.40x = 18,491,545.20 × 9,008,659.84 - Step 4: Simplify right side
13,408,992.40x = 166,584,040,622,784.75 - Step 5: Solve for x
x = 166,584,040,622,784.75/13,408,992.40 - Step 6: Final answer
x = 12,423,307.86
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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.