Home / 20,439.56-30,659.28-5,648.44

Finding the Fourth Proportional to 20,439.56, 30,659.28 and 5,648.44

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Solution

The fourth proportional to 20,439.56, 30,659.28 and 5,648.44 is: 8,472.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.56 : 30,659.28 = 5,648.44 : x
  2. Step 2: Convert to fraction form
    20,439.56/30,659.28 = 5,648.44/x
  3. Step 3: Cross multiply
    20,439.56x = 30,659.28 × 5,648.44
  4. Step 4: Simplify right side
    20,439.56x = 173,177,103.52
  5. Step 5: Solve for x
    x = 173,177,103.52/20,439.56
  6. Step 6: Final answer
    x = 8,472.64

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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.