Home / 18,983.42-28,456.86-12,745.14

Finding the Fourth Proportional to 18,983.42, 28,456.86 and 12,745.14

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Solution

The fourth proportional to 18,983.42, 28,456.86 and 12,745.14 is: 19,105.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,983.42 : 28,456.86 = 12,745.14 : x
  2. Step 2: Convert to fraction form
    18,983.42/28,456.86 = 12,745.14/x
  3. Step 3: Cross multiply
    18,983.42x = 28,456.86 × 12,745.14
  4. Step 4: Simplify right side
    18,983.42x = 362,686,664.66
  5. Step 5: Solve for x
    x = 362,686,664.66/18,983.42
  6. Step 6: Final answer
    x = 19,105.44

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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.