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Finding the Fourth Proportional to 20,592, 28,407.42 and 12,091.41

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Solution

The fourth proportional to 20,592, 28,407.42 and 12,091.41 is: 16,680.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,592 : 28,407.42 = 12,091.41 : x
  2. Step 2: Convert to fraction form
    20,592/28,407.42 = 12,091.41/x
  3. Step 3: Cross multiply
    20,592x = 28,407.42 × 12,091.41
  4. Step 4: Simplify right side
    20,592x = 343,485,762.26
  5. Step 5: Solve for x
    x = 343,485,762.26/20,592
  6. Step 6: Final answer
    x = 16,680.54

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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.