Home / 20,619.62-28,440.39-18,923.60

Finding the Fourth Proportional to 20,619.62, 28,440.39 and 18,923.60

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Solution

The fourth proportional to 20,619.62, 28,440.39 and 18,923.60 is: 26,101.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.62 : 28,440.39 = 18,923.60 : x
  2. Step 2: Convert to fraction form
    20,619.62/28,440.39 = 18,923.60/x
  3. Step 3: Cross multiply
    20,619.62x = 28,440.39 × 18,923.60
  4. Step 4: Simplify right side
    20,619.62x = 538,194,351.04
  5. Step 5: Solve for x
    x = 538,194,351.04/20,619.62
  6. Step 6: Final answer
    x = 26,101.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.