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Finding the Fourth Proportional to 17,011.45, 25,469.25 and 12,838.20

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Solution

The fourth proportional to 17,011.45, 25,469.25 and 12,838.20 is: 19,221.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,011.45 : 25,469.25 = 12,838.20 : x
  2. Step 2: Convert to fraction form
    17,011.45/25,469.25 = 12,838.20/x
  3. Step 3: Cross multiply
    17,011.45x = 25,469.25 × 12,838.20
  4. Step 4: Simplify right side
    17,011.45x = 326,979,325.35
  5. Step 5: Solve for x
    x = 326,979,325.35/17,011.45
  6. Step 6: Final answer
    x = 19,221.13

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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.