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Finding the Fourth Proportional to 12,404.60, 18,606.90 and 5,492.60

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Solution

The fourth proportional to 12,404.60, 18,606.90 and 5,492.60 is: 8,238.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,404.60 : 18,606.90 = 5,492.60 : x
  2. Step 2: Convert to fraction form
    12,404.60/18,606.90 = 5,492.60/x
  3. Step 3: Cross multiply
    12,404.60x = 18,606.90 × 5,492.60
  4. Step 4: Simplify right side
    12,404.60x = 102,200,258.94
  5. Step 5: Solve for x
    x = 102,200,258.94/12,404.60
  6. Step 6: Final answer
    x = 8,238.90

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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.