Home / 13,262.38-18,311.06-8,228.64

Finding the Fourth Proportional to 13,262.38, 18,311.06 and 8,228.64

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Solution

The fourth proportional to 13,262.38, 18,311.06 and 8,228.64 is: 11,361.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,262.38 : 18,311.06 = 8,228.64 : x
  2. Step 2: Convert to fraction form
    13,262.38/18,311.06 = 8,228.64/x
  3. Step 3: Cross multiply
    13,262.38x = 18,311.06 × 8,228.64
  4. Step 4: Simplify right side
    13,262.38x = 150,675,120.76
  5. Step 5: Solve for x
    x = 150,675,120.76/13,262.38
  6. Step 6: Final answer
    x = 11,361.09

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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.