Home / 13,311.24-18,372.72-8,005.04

Finding the Fourth Proportional to 13,311.24, 18,372.72 and 8,005.04

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Solution

The fourth proportional to 13,311.24, 18,372.72 and 8,005.04 is: 11,048.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.24 : 18,372.72 = 8,005.04 : x
  2. Step 2: Convert to fraction form
    13,311.24/18,372.72 = 8,005.04/x
  3. Step 3: Cross multiply
    13,311.24x = 18,372.72 × 8,005.04
  4. Step 4: Simplify right side
    13,311.24x = 147,074,266.65
  5. Step 5: Solve for x
    x = 147,074,266.65/13,311.24
  6. Step 6: Final answer
    x = 11,048.88

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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.