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Finding the Fourth Proportional to 12,467.56, 18,680.49 and 8,763.16

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Solution

The fourth proportional to 12,467.56, 18,680.49 and 8,763.16 is: 13,130.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,467.56 : 18,680.49 = 8,763.16 : x
  2. Step 2: Convert to fraction form
    12,467.56/18,680.49 = 8,763.16/x
  3. Step 3: Cross multiply
    12,467.56x = 18,680.49 × 8,763.16
  4. Step 4: Simplify right side
    12,467.56x = 163,700,122.75
  5. Step 5: Solve for x
    x = 163,700,122.75/12,467.56
  6. Step 6: Final answer
    x = 13,130.09

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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.