Home / 11,217.52-15,469.68-8,865.28

Finding the Fourth Proportional to 11,217.52, 15,469.68 and 8,865.28

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Solution

The fourth proportional to 11,217.52, 15,469.68 and 8,865.28 is: 12,225.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,217.52 : 15,469.68 = 8,865.28 : x
  2. Step 2: Convert to fraction form
    11,217.52/15,469.68 = 8,865.28/x
  3. Step 3: Cross multiply
    11,217.52x = 15,469.68 × 8,865.28
  4. Step 4: Simplify right side
    11,217.52x = 137,143,044.71
  5. Step 5: Solve for x
    x = 137,143,044.71/11,217.52
  6. Step 6: Final answer
    x = 12,225.79

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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.