Finding the Fourth Proportional to 28,571.76, 42,885.35 and 13,791.08
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Solution
The fourth proportional to 28,571.76, 42,885.35 and 13,791.08 is: 20,699.99
Step by Step Solution
- Step 1: Write the proportion equation
28,571.76 : 42,885.35 = 13,791.08 : x - Step 2: Convert to fraction form
28,571.76/42,885.35 = 13,791.08/x - Step 3: Cross multiply
28,571.76x = 42,885.35 × 13,791.08 - Step 4: Simplify right side
28,571.76x = 591,435,009.30 - Step 5: Solve for x
x = 591,435,009.30/28,571.76 - Step 6: Final answer
x = 20,699.99
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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.