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Finding the Fourth Proportional to 14,499.60, 20,019.09 and 11,136.41

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Solution

The fourth proportional to 14,499.60, 20,019.09 and 11,136.41 is: 15,375.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,499.60 : 20,019.09 = 11,136.41 : x
  2. Step 2: Convert to fraction form
    14,499.60/20,019.09 = 11,136.41/x
  3. Step 3: Cross multiply
    14,499.60x = 20,019.09 × 11,136.41
  4. Step 4: Simplify right side
    14,499.60x = 222,940,693.97
  5. Step 5: Solve for x
    x = 222,940,693.97/14,499.60
  6. Step 6: Final answer
    x = 15,375.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.