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Finding the Fourth Proportional to 17,087.20, 25,630.80 and 16,856.80

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Solution

The fourth proportional to 17,087.20, 25,630.80 and 16,856.80 is: 25,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,087.20 : 25,630.80 = 16,856.80 : x
  2. Step 2: Convert to fraction form
    17,087.20/25,630.80 = 16,856.80/x
  3. Step 3: Cross multiply
    17,087.20x = 25,630.80 × 16,856.80
  4. Step 4: Simplify right side
    17,087.20x = 432,053,269.44
  5. Step 5: Solve for x
    x = 432,053,269.44/17,087.20
  6. Step 6: Final answer
    x = 25,285.20

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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.