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Finding the Fourth Proportional to 18,408.36, 25,400 and 11,695.08

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Solution

The fourth proportional to 18,408.36, 25,400 and 11,695.08 is: 16,136.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,408.36 : 25,400 = 11,695.08 : x
  2. Step 2: Convert to fraction form
    18,408.36/25,400 = 11,695.08/x
  3. Step 3: Cross multiply
    18,408.36x = 25,400 × 11,695.08
  4. Step 4: Simplify right side
    18,408.36x = 297,055,032
  5. Step 5: Solve for x
    x = 297,055,032/18,408.36
  6. Step 6: Final answer
    x = 16,136.96

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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.