Home / 18,939.60-28,405.26-11,025.36

Finding the Fourth Proportional to 18,939.60, 28,405.26 and 11,025.36

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Solution

The fourth proportional to 18,939.60, 28,405.26 and 11,025.36 is: 16,535.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.60 : 28,405.26 = 11,025.36 : x
  2. Step 2: Convert to fraction form
    18,939.60/28,405.26 = 11,025.36/x
  3. Step 3: Cross multiply
    18,939.60x = 28,405.26 × 11,025.36
  4. Step 4: Simplify right side
    18,939.60x = 313,178,217.39
  5. Step 5: Solve for x
    x = 313,178,217.39/18,939.60
  6. Step 6: Final answer
    x = 16,535.63

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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.