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Finding the Fourth Proportional to 13,992.60, 20,989.26 and 4,632.60

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Solution

The fourth proportional to 13,992.60, 20,989.26 and 4,632.60 is: 6,949.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.60 : 20,989.26 = 4,632.60 : x
  2. Step 2: Convert to fraction form
    13,992.60/20,989.26 = 4,632.60/x
  3. Step 3: Cross multiply
    13,992.60x = 20,989.26 × 4,632.60
  4. Step 4: Simplify right side
    13,992.60x = 97,234,845.88
  5. Step 5: Solve for x
    x = 97,234,845.88/13,992.60
  6. Step 6: Final answer
    x = 6,949.02

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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.