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Finding the Fourth Proportional to 13,571, 20,355.86 and 3,575.52

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Solution

The fourth proportional to 13,571, 20,355.86 and 3,575.52 is: 5,363.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571 : 20,355.86 = 3,575.52 : x
  2. Step 2: Convert to fraction form
    13,571/20,355.86 = 3,575.52/x
  3. Step 3: Cross multiply
    13,571x = 20,355.86 × 3,575.52
  4. Step 4: Simplify right side
    13,571x = 72,782,784.55
  5. Step 5: Solve for x
    x = 72,782,784.55/13,571
  6. Step 6: Final answer
    x = 5,363.11

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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.