Finding the Fourth Proportional to 15,117,747.96, 20,861,593.30 and 8,590,471.50
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Solution
The fourth proportional to 15,117,747.96, 20,861,593.30 and 8,590,471.50 is: 11,854,339.89
Step by Step Solution
- Step 1: Write the proportion equation
15,117,747.96 : 20,861,593.30 = 8,590,471.50 : x - Step 2: Convert to fraction form
15,117,747.96/20,861,593.30 = 8,590,471.50/x - Step 3: Cross multiply
15,117,747.96x = 20,861,593.30 × 8,590,471.50 - Step 4: Simplify right side
15,117,747.96x = 179,210,922,777,210 - Step 5: Solve for x
x = 179,210,922,777,210/15,117,747.96 - Step 6: Final answer
x = 11,854,339.89
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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.