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Finding the Fourth Proportional to 13,320.60, 19,956.60 and 11,230.80

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Solution

The fourth proportional to 13,320.60, 19,956.60 and 11,230.80 is: 16,825.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.60 : 19,956.60 = 11,230.80 : x
  2. Step 2: Convert to fraction form
    13,320.60/19,956.60 = 11,230.80/x
  3. Step 3: Cross multiply
    13,320.60x = 19,956.60 × 11,230.80
  4. Step 4: Simplify right side
    13,320.60x = 224,128,583.28
  5. Step 5: Solve for x
    x = 224,128,583.28/13,320.60
  6. Step 6: Final answer
    x = 16,825.71

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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.