Finding the Fourth Proportional to 13,700,138.07, 18,905,379.42 and 7,503,949.11
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Solution
The fourth proportional to 13,700,138.07, 18,905,379.42 and 7,503,949.11 is: 10,355,005.50
Step by Step Solution
- Step 1: Write the proportion equation
13,700,138.07 : 18,905,379.42 = 7,503,949.11 : x - Step 2: Convert to fraction form
13,700,138.07/18,905,379.42 = 7,503,949.11/x - Step 3: Cross multiply
13,700,138.07x = 18,905,379.42 × 7,503,949.11 - Step 4: Simplify right side
13,700,138.07x = 141,865,005,072,921.34 - Step 5: Solve for x
x = 141,865,005,072,921.34/13,700,138.07 - Step 6: Final answer
x = 10,355,005.50
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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.