Home / 21,327.20-32,005.20-11,967.20

Finding the Fourth Proportional to 21,327.20, 32,005.20 and 11,967.20

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Solution

The fourth proportional to 21,327.20, 32,005.20 and 11,967.20 is: 17,958.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.20 : 32,005.20 = 11,967.20 : x
  2. Step 2: Convert to fraction form
    21,327.20/32,005.20 = 11,967.20/x
  3. Step 3: Cross multiply
    21,327.20x = 32,005.20 × 11,967.20
  4. Step 4: Simplify right side
    21,327.20x = 383,012,629.44
  5. Step 5: Solve for x
    x = 383,012,629.44/21,327.20
  6. Step 6: Final answer
    x = 17,958.88

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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.