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Finding the Fourth Proportional to 21,732.32, 32,576.60 and 8,579.60

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Solution

The fourth proportional to 21,732.32, 32,576.60 and 8,579.60 is: 12,860.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,732.32 : 32,576.60 = 8,579.60 : x
  2. Step 2: Convert to fraction form
    21,732.32/32,576.60 = 8,579.60/x
  3. Step 3: Cross multiply
    21,732.32x = 32,576.60 × 8,579.60
  4. Step 4: Simplify right side
    21,732.32x = 279,494,197.36
  5. Step 5: Solve for x
    x = 279,494,197.36/21,732.32
  6. Step 6: Final answer
    x = 12,860.76

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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.