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Finding the Fourth Proportional to 18,656.82, 25,745.80 and 11,101.41

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Solution

The fourth proportional to 18,656.82, 25,745.80 and 11,101.41 is: 15,319.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,656.82 : 25,745.80 = 11,101.41 : x
  2. Step 2: Convert to fraction form
    18,656.82/25,745.80 = 11,101.41/x
  3. Step 3: Cross multiply
    18,656.82x = 25,745.80 × 11,101.41
  4. Step 4: Simplify right side
    18,656.82x = 285,814,681.58
  5. Step 5: Solve for x
    x = 285,814,681.58/18,656.82
  6. Step 6: Final answer
    x = 15,319.58

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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.