Home / 13,874.40-20,801.25-5,107.68

Finding the Fourth Proportional to 13,874.40, 20,801.25 and 5,107.68

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Solution

The fourth proportional to 13,874.40, 20,801.25 and 5,107.68 is: 7,657.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,874.40 : 20,801.25 = 5,107.68 : x
  2. Step 2: Convert to fraction form
    13,874.40/20,801.25 = 5,107.68/x
  3. Step 3: Cross multiply
    13,874.40x = 20,801.25 × 5,107.68
  4. Step 4: Simplify right side
    13,874.40x = 106,246,128.60
  5. Step 5: Solve for x
    x = 106,246,128.60/13,874.40
  6. Step 6: Final answer
    x = 7,657.71

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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.