Home / 13,504.60-20,256.90-8,579.80

Finding the Fourth Proportional to 13,504.60, 20,256.90 and 8,579.80

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Solution

The fourth proportional to 13,504.60, 20,256.90 and 8,579.80 is: 12,869.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,504.60 : 20,256.90 = 8,579.80 : x
  2. Step 2: Convert to fraction form
    13,504.60/20,256.90 = 8,579.80/x
  3. Step 3: Cross multiply
    13,504.60x = 20,256.90 × 8,579.80
  4. Step 4: Simplify right side
    13,504.60x = 173,800,150.62
  5. Step 5: Solve for x
    x = 173,800,150.62/13,504.60
  6. Step 6: Final answer
    x = 12,869.70

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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.