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Finding the Fourth Proportional to 13,352.88, 20,025.90 and 3,992.88

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Solution

The fourth proportional to 13,352.88, 20,025.90 and 3,992.88 is: 5,988.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,352.88 : 20,025.90 = 3,992.88 : x
  2. Step 2: Convert to fraction form
    13,352.88/20,025.90 = 3,992.88/x
  3. Step 3: Cross multiply
    13,352.88x = 20,025.90 × 3,992.88
  4. Step 4: Simplify right side
    13,352.88x = 79,961,015.59
  5. Step 5: Solve for x
    x = 79,961,015.59/13,352.88
  6. Step 6: Final answer
    x = 5,988.30

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1.5x scale

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.