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Finding the Fourth Proportional to 8,556.64, 12,833.68 and 7,105.12

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Solution

The fourth proportional to 8,556.64, 12,833.68 and 7,105.12 is: 10,656.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,556.64 : 12,833.68 = 7,105.12 : x
  2. Step 2: Convert to fraction form
    8,556.64/12,833.68 = 7,105.12/x
  3. Step 3: Cross multiply
    8,556.64x = 12,833.68 × 7,105.12
  4. Step 4: Simplify right side
    8,556.64x = 91,184,836.44
  5. Step 5: Solve for x
    x = 91,184,836.44/8,556.64
  6. Step 6: Final answer
    x = 10,656.62

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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.