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Finding the Fourth Proportional to 12,168.64, 18,252.96 and 2,934.64

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Solution

The fourth proportional to 12,168.64, 18,252.96 and 2,934.64 is: 4,401.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.64 : 18,252.96 = 2,934.64 : x
  2. Step 2: Convert to fraction form
    12,168.64/18,252.96 = 2,934.64/x
  3. Step 3: Cross multiply
    12,168.64x = 18,252.96 × 2,934.64
  4. Step 4: Simplify right side
    12,168.64x = 53,565,866.53
  5. Step 5: Solve for x
    x = 53,565,866.53/12,168.64
  6. Step 6: Final answer
    x = 4,401.96

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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.