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Finding the Fourth Proportional to 18,238.34, 27,358.08 and 5,758.48

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Solution

The fourth proportional to 18,238.34, 27,358.08 and 5,758.48 is: 8,637.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,238.34 : 27,358.08 = 5,758.48 : x
  2. Step 2: Convert to fraction form
    18,238.34/27,358.08 = 5,758.48/x
  3. Step 3: Cross multiply
    18,238.34x = 27,358.08 × 5,758.48
  4. Step 4: Simplify right side
    18,238.34x = 157,540,956.52
  5. Step 5: Solve for x
    x = 157,540,956.52/18,238.34
  6. Step 6: Final answer
    x = 8,637.90

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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.