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Finding the Fourth Proportional to 9,015.72, 13,508.08 and 8,102.68

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Solution

The fourth proportional to 9,015.72, 13,508.08 and 8,102.68 is: 12,140.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,015.72 : 13,508.08 = 8,102.68 : x
  2. Step 2: Convert to fraction form
    9,015.72/13,508.08 = 8,102.68/x
  3. Step 3: Cross multiply
    9,015.72x = 13,508.08 × 8,102.68
  4. Step 4: Simplify right side
    9,015.72x = 109,451,649.65
  5. Step 5: Solve for x
    x = 109,451,649.65/9,015.72
  6. Step 6: Final answer
    x = 12,140.09

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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.