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Finding the Fourth Proportional to 18,655.62, 25,745.37 and 10,158.09

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Solution

The fourth proportional to 18,655.62, 25,745.37 and 10,158.09 is: 14,018.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.62 : 25,745.37 = 10,158.09 : x
  2. Step 2: Convert to fraction form
    18,655.62/25,745.37 = 10,158.09/x
  3. Step 3: Cross multiply
    18,655.62x = 25,745.37 × 10,158.09
  4. Step 4: Simplify right side
    18,655.62x = 261,523,785.54
  5. Step 5: Solve for x
    x = 261,523,785.54/18,655.62
  6. Step 6: Final answer
    x = 14,018.50

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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.