Home / 21,956.20-33,007.20-18,748.60

Finding the Fourth Proportional to 21,956.20, 33,007.20 and 18,748.60

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Solution

The fourth proportional to 21,956.20, 33,007.20 and 18,748.60 is: 28,185.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.20 : 33,007.20 = 18,748.60 : x
  2. Step 2: Convert to fraction form
    21,956.20/33,007.20 = 18,748.60/x
  3. Step 3: Cross multiply
    21,956.20x = 33,007.20 × 18,748.60
  4. Step 4: Simplify right side
    21,956.20x = 618,838,789.92
  5. Step 5: Solve for x
    x = 618,838,789.92/21,956.20
  6. Step 6: Final answer
    x = 28,185.15

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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.