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Finding the Fourth Proportional to 12,168.66, 18,252.99 and 4,776.60

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Solution

The fourth proportional to 12,168.66, 18,252.99 and 4,776.60 is: 7,164.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.66 : 18,252.99 = 4,776.60 : x
  2. Step 2: Convert to fraction form
    12,168.66/18,252.99 = 4,776.60/x
  3. Step 3: Cross multiply
    12,168.66x = 18,252.99 × 4,776.60
  4. Step 4: Simplify right side
    12,168.66x = 87,187,232.03
  5. Step 5: Solve for x
    x = 87,187,232.03/12,168.66
  6. Step 6: Final answer
    x = 7,164.90

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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.