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Finding the Fourth Proportional to 12,924.57, 17,836.80 and 8,682.75

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Solution

The fourth proportional to 12,924.57, 17,836.80 and 8,682.75 is: 11,982.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,924.57 : 17,836.80 = 8,682.75 : x
  2. Step 2: Convert to fraction form
    12,924.57/17,836.80 = 8,682.75/x
  3. Step 3: Cross multiply
    12,924.57x = 17,836.80 × 8,682.75
  4. Step 4: Simplify right side
    12,924.57x = 154,872,475.20
  5. Step 5: Solve for x
    x = 154,872,475.20/12,924.57
  6. Step 6: Final answer
    x = 11,982.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.