Finding the Fourth Proportional to 13,749,434.09, 20,620,951.57 and 5,117,599.70
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Solution
The fourth proportional to 13,749,434.09, 20,620,951.57 and 5,117,599.70 is: 7,675,208.66
Step by Step Solution
- Step 1: Write the proportion equation
13,749,434.09 : 20,620,951.57 = 5,117,599.70 : x - Step 2: Convert to fraction form
13,749,434.09/20,620,951.57 = 5,117,599.70/x - Step 3: Cross multiply
13,749,434.09x = 20,620,951.57 × 5,117,599.70 - Step 4: Simplify right side
13,749,434.09x = 105,529,775,568,346.53 - Step 5: Solve for x
x = 105,529,775,568,346.53/13,749,434.09 - Step 6: Final answer
x = 7,675,208.66
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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.