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Finding the Fourth Proportional to 8,745.48, 13,067.04 and 8,439.24

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Solution

The fourth proportional to 8,745.48, 13,067.04 and 8,439.24 is: 12,609.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.48 : 13,067.04 = 8,439.24 : x
  2. Step 2: Convert to fraction form
    8,745.48/13,067.04 = 8,439.24/x
  3. Step 3: Cross multiply
    8,745.48x = 13,067.04 × 8,439.24
  4. Step 4: Simplify right side
    8,745.48x = 110,275,886.65
  5. Step 5: Solve for x
    x = 110,275,886.65/8,745.48
  6. Step 6: Final answer
    x = 12,609.47

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.