Finding the Fourth Proportional to 13,781,309.62, 20,672,183.66 and 7,672,121.60
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Solution
The fourth proportional to 13,781,309.62, 20,672,183.66 and 7,672,121.60 is: 11,508,304.45
Step by Step Solution
- Step 1: Write the proportion equation
13,781,309.62 : 20,672,183.66 = 7,672,121.60 : x - Step 2: Convert to fraction form
13,781,309.62/20,672,183.66 = 7,672,121.60/x - Step 3: Cross multiply
13,781,309.62x = 20,672,183.66 × 7,672,121.60 - Step 4: Simplify right side
13,781,309.62x = 158,599,506,777,053.06 - Step 5: Solve for x
x = 158,599,506,777,053.06/13,781,309.62 - Step 6: Final answer
x = 11,508,304.45
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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.