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Finding the Fourth Proportional to 13,610.60, 18,784.68 and 8,308.49

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Solution

The fourth proportional to 13,610.60, 18,784.68 and 8,308.49 is: 11,466.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.60 : 18,784.68 = 8,308.49 : x
  2. Step 2: Convert to fraction form
    13,610.60/18,784.68 = 8,308.49/x
  3. Step 3: Cross multiply
    13,610.60x = 18,784.68 × 8,308.49
  4. Step 4: Simplify right side
    13,610.60x = 156,072,325.93
  5. Step 5: Solve for x
    x = 156,072,325.93/13,610.60
  6. Step 6: Final answer
    x = 11,466.97

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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.