Home / 11,257.72-16,887.48-8,489.68

Finding the Fourth Proportional to 11,257.72, 16,887.48 and 8,489.68

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Solution

The fourth proportional to 11,257.72, 16,887.48 and 8,489.68 is: 12,735.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,257.72 : 16,887.48 = 8,489.68 : x
  2. Step 2: Convert to fraction form
    11,257.72/16,887.48 = 8,489.68/x
  3. Step 3: Cross multiply
    11,257.72x = 16,887.48 × 8,489.68
  4. Step 4: Simplify right side
    11,257.72x = 143,369,301.21
  5. Step 5: Solve for x
    x = 143,369,301.21/11,257.72
  6. Step 6: Final answer
    x = 12,735.20

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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.