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Finding the Fourth Proportional to 13,673.44, 18,869.36 and 8,007.16

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Solution

The fourth proportional to 13,673.44, 18,869.36 and 8,007.16 is: 11,049.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.44 : 18,869.36 = 8,007.16 : x
  2. Step 2: Convert to fraction form
    13,673.44/18,869.36 = 8,007.16/x
  3. Step 3: Cross multiply
    13,673.44x = 18,869.36 × 8,007.16
  4. Step 4: Simplify right side
    13,673.44x = 151,089,984.62
  5. Step 5: Solve for x
    x = 151,089,984.62/13,673.44
  6. Step 6: Final answer
    x = 11,049.89

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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.