Home / 13,826.60-20,742.60-5,505.20

Finding the Fourth Proportional to 13,826.60, 20,742.60 and 5,505.20

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Solution

The fourth proportional to 13,826.60, 20,742.60 and 5,505.20 is: 8,258.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.60 : 20,742.60 = 5,505.20 : x
  2. Step 2: Convert to fraction form
    13,826.60/20,742.60 = 5,505.20/x
  3. Step 3: Cross multiply
    13,826.60x = 20,742.60 × 5,505.20
  4. Step 4: Simplify right side
    13,826.60x = 114,192,161.52
  5. Step 5: Solve for x
    x = 114,192,161.52/13,826.60
  6. Step 6: Final answer
    x = 8,258.88

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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.