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Finding the Fourth Proportional to 18,238.92, 25,169.71 and 9,855.42

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Solution

The fourth proportional to 18,238.92, 25,169.71 and 9,855.42 is: 13,600.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,238.92 : 25,169.71 = 9,855.42 : x
  2. Step 2: Convert to fraction form
    18,238.92/25,169.71 = 9,855.42/x
  3. Step 3: Cross multiply
    18,238.92x = 25,169.71 × 9,855.42
  4. Step 4: Simplify right side
    18,238.92x = 248,058,132.08
  5. Step 5: Solve for x
    x = 248,058,132.08/18,238.92
  6. Step 6: Final answer
    x = 13,600.48

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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.