Home / 13,179.62-18,181.60-8,142.03

Finding the Fourth Proportional to 13,179.62, 18,181.60 and 8,142.03

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Solution

The fourth proportional to 13,179.62, 18,181.60 and 8,142.03 is: 11,232.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,179.62 : 18,181.60 = 8,142.03 : x
  2. Step 2: Convert to fraction form
    13,179.62/18,181.60 = 8,142.03/x
  3. Step 3: Cross multiply
    13,179.62x = 18,181.60 × 8,142.03
  4. Step 4: Simplify right side
    13,179.62x = 148,035,112.29
  5. Step 5: Solve for x
    x = 148,035,112.29/13,179.62
  6. Step 6: Final answer
    x = 11,232.12

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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.