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Finding the Fourth Proportional to 18,730.72, 25,829.04 and 16,086.88

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Solution

The fourth proportional to 18,730.72, 25,829.04 and 16,086.88 is: 22,183.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,730.72 : 25,829.04 = 16,086.88 : x
  2. Step 2: Convert to fraction form
    18,730.72/25,829.04 = 16,086.88/x
  3. Step 3: Cross multiply
    18,730.72x = 25,829.04 × 16,086.88
  4. Step 4: Simplify right side
    18,730.72x = 415,508,667.00
  5. Step 5: Solve for x
    x = 415,508,667.00/18,730.72
  6. Step 6: Final answer
    x = 22,183.27

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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.