Home / 18,972.52-28,388.30-11,919.52

Finding the Fourth Proportional to 18,972.52, 28,388.30 and 11,919.52

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Solution

The fourth proportional to 18,972.52, 28,388.30 and 11,919.52 is: 17,834.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.52 : 28,388.30 = 11,919.52 : x
  2. Step 2: Convert to fraction form
    18,972.52/28,388.30 = 11,919.52/x
  3. Step 3: Cross multiply
    18,972.52x = 28,388.30 × 11,919.52
  4. Step 4: Simplify right side
    18,972.52x = 338,374,797.47
  5. Step 5: Solve for x
    x = 338,374,797.47/18,972.52
  6. Step 6: Final answer
    x = 17,834.99

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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.