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Finding the Fourth Proportional to 17,211.92, 25,806.36 and 7,972.88

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Solution

The fourth proportional to 17,211.92, 25,806.36 and 7,972.88 is: 11,953.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,211.92 : 25,806.36 = 7,972.88 : x
  2. Step 2: Convert to fraction form
    17,211.92/25,806.36 = 7,972.88/x
  3. Step 3: Cross multiply
    17,211.92x = 25,806.36 × 7,972.88
  4. Step 4: Simplify right side
    17,211.92x = 205,751,011.52
  5. Step 5: Solve for x
    x = 205,751,011.52/17,211.92
  6. Step 6: Final answer
    x = 11,953.98

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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.