Home / 18,372.76-27,555.39-5,221.60

Finding the Fourth Proportional to 18,372.76, 27,555.39 and 5,221.60

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Solution

The fourth proportional to 18,372.76, 27,555.39 and 5,221.60 is: 7,831.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,372.76 : 27,555.39 = 5,221.60 : x
  2. Step 2: Convert to fraction form
    18,372.76/27,555.39 = 5,221.60/x
  3. Step 3: Cross multiply
    18,372.76x = 27,555.39 × 5,221.60
  4. Step 4: Simplify right side
    18,372.76x = 143,883,155.54
  5. Step 5: Solve for x
    x = 143,883,155.54/18,372.76
  6. Step 6: Final answer
    x = 7,831.33

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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.