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Finding the Fourth Proportional to 13,308.48, 19,962.72 and 7,469.19

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Solution

The fourth proportional to 13,308.48, 19,962.72 and 7,469.19 is: 11,203.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,308.48 : 19,962.72 = 7,469.19 : x
  2. Step 2: Convert to fraction form
    13,308.48/19,962.72 = 7,469.19/x
  3. Step 3: Cross multiply
    13,308.48x = 19,962.72 × 7,469.19
  4. Step 4: Simplify right side
    13,308.48x = 149,105,348.60
  5. Step 5: Solve for x
    x = 149,105,348.60/13,308.48
  6. Step 6: Final answer
    x = 11,203.79

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Similar ratio
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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.