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Finding the Fourth Proportional to 18,329.40, 27,492.48 and 5,181.48

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Solution

The fourth proportional to 18,329.40, 27,492.48 and 5,181.48 is: 7,771.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,329.40 : 27,492.48 = 5,181.48 : x
  2. Step 2: Convert to fraction form
    18,329.40/27,492.48 = 5,181.48/x
  3. Step 3: Cross multiply
    18,329.40x = 27,492.48 × 5,181.48
  4. Step 4: Simplify right side
    18,329.40x = 142,451,735.27
  5. Step 5: Solve for x
    x = 142,451,735.27/18,329.40
  6. Step 6: Final answer
    x = 7,771.76

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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.