Home / 18,917.78-28,321.56-14,745.06

Finding the Fourth Proportional to 18,917.78, 28,321.56 and 14,745.06

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Solution

The fourth proportional to 18,917.78, 28,321.56 and 14,745.06 is: 22,074.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,917.78 : 28,321.56 = 14,745.06 : x
  2. Step 2: Convert to fraction form
    18,917.78/28,321.56 = 14,745.06/x
  3. Step 3: Cross multiply
    18,917.78x = 28,321.56 × 14,745.06
  4. Step 4: Simplify right side
    18,917.78x = 417,603,101.49
  5. Step 5: Solve for x
    x = 417,603,101.49/18,917.78
  6. Step 6: Final answer
    x = 22,074.64

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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.