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Finding the Fourth Proportional to 12,168.54, 18,252.80 and 4,776.48

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Solution

The fourth proportional to 12,168.54, 18,252.80 and 4,776.48 is: 7,164.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.54 : 18,252.80 = 4,776.48 : x
  2. Step 2: Convert to fraction form
    12,168.54/18,252.80 = 4,776.48/x
  3. Step 3: Cross multiply
    12,168.54x = 18,252.80 × 4,776.48
  4. Step 4: Simplify right side
    12,168.54x = 87,184,054.82
  5. Step 5: Solve for x
    x = 87,184,054.82/12,168.54
  6. Step 6: Final answer
    x = 7,164.71

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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.