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Finding the Fourth Proportional to 13,921.64, 20,883.60 and 5,600.60

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Solution

The fourth proportional to 13,921.64, 20,883.60 and 5,600.60 is: 8,401.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.64 : 20,883.60 = 5,600.60 : x
  2. Step 2: Convert to fraction form
    13,921.64/20,883.60 = 5,600.60/x
  3. Step 3: Cross multiply
    13,921.64x = 20,883.60 × 5,600.60
  4. Step 4: Simplify right side
    13,921.64x = 116,960,690.16
  5. Step 5: Solve for x
    x = 116,960,690.16/13,921.64
  6. Step 6: Final answer
    x = 8,401.36

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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.