Home / 20,378.73-30,548.46-11,138.25

Finding the Fourth Proportional to 20,378.73, 30,548.46 and 11,138.25

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Solution

The fourth proportional to 20,378.73, 30,548.46 and 11,138.25 is: 16,696.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.73 : 30,548.46 = 11,138.25 : x
  2. Step 2: Convert to fraction form
    20,378.73/30,548.46 = 11,138.25/x
  3. Step 3: Cross multiply
    20,378.73x = 30,548.46 × 11,138.25
  4. Step 4: Simplify right side
    20,378.73x = 340,256,384.60
  5. Step 5: Solve for x
    x = 340,256,384.60/20,378.73
  6. Step 6: Final answer
    x = 16,696.64

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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.