Finding the Fourth Proportional to 13,615.17, 20,416.41 and 8,934.99
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Solution
The fourth proportional to 13,615.17, 20,416.41 and 8,934.99 is: 13,398.32
Step by Step Solution
- Step 1: Write the proportion equation
13,615.17 : 20,416.41 = 8,934.99 : x - Step 2: Convert to fraction form
13,615.17/20,416.41 = 8,934.99/x - Step 3: Cross multiply
13,615.17x = 20,416.41 × 8,934.99 - Step 4: Simplify right side
13,615.17x = 182,420,419.19 - Step 5: Solve for x
x = 182,420,419.19/13,615.17 - Step 6: Final answer
x = 13,398.32
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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.