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Finding the Fourth Proportional to 17,022.80, 25,483.80 and 12,659.60

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Solution

The fourth proportional to 17,022.80, 25,483.80 and 12,659.60 is: 18,951.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,022.80 : 25,483.80 = 12,659.60 : x
  2. Step 2: Convert to fraction form
    17,022.80/25,483.80 = 12,659.60/x
  3. Step 3: Cross multiply
    17,022.80x = 25,483.80 × 12,659.60
  4. Step 4: Simplify right side
    17,022.80x = 322,614,714.48
  5. Step 5: Solve for x
    x = 322,614,714.48/17,022.80
  6. Step 6: Final answer
    x = 18,951.92

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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.