Home / 13,358.10-20,037.15-12,789.30

Finding the Fourth Proportional to 13,358.10, 20,037.15 and 12,789.30

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Solution

The fourth proportional to 13,358.10, 20,037.15 and 12,789.30 is: 19,183.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,358.10 : 20,037.15 = 12,789.30 : x
  2. Step 2: Convert to fraction form
    13,358.10/20,037.15 = 12,789.30/x
  3. Step 3: Cross multiply
    13,358.10x = 20,037.15 × 12,789.30
  4. Step 4: Simplify right side
    13,358.10x = 256,261,122.50
  5. Step 5: Solve for x
    x = 256,261,122.50/13,358.10
  6. Step 6: Final answer
    x = 19,183.95

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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.