Home / 18,981.04-28,480.48-11,959.44

Finding the Fourth Proportional to 18,981.04, 28,480.48 and 11,959.44

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Solution

The fourth proportional to 18,981.04, 28,480.48 and 11,959.44 is: 17,944.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,981.04 : 28,480.48 = 11,959.44 : x
  2. Step 2: Convert to fraction form
    18,981.04/28,480.48 = 11,959.44/x
  3. Step 3: Cross multiply
    18,981.04x = 28,480.48 × 11,959.44
  4. Step 4: Simplify right side
    18,981.04x = 340,610,591.73
  5. Step 5: Solve for x
    x = 340,610,591.73/18,981.04
  6. Step 6: Final answer
    x = 17,944.78

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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.