Home / 13,785.45-20,665.88-6,379.73

Finding the Fourth Proportional to 13,785.45, 20,665.88 and 6,379.73

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Solution

The fourth proportional to 13,785.45, 20,665.88 and 6,379.73 is: 9,563.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.45 : 20,665.88 = 6,379.73 : x
  2. Step 2: Convert to fraction form
    13,785.45/20,665.88 = 6,379.73/x
  3. Step 3: Cross multiply
    13,785.45x = 20,665.88 × 6,379.73
  4. Step 4: Simplify right side
    13,785.45x = 131,842,734.61
  5. Step 5: Solve for x
    x = 131,842,734.61/13,785.45
  6. Step 6: Final answer
    x = 9,563.91

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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.