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Finding the Fourth Proportional to 12,169.76, 18,254.64 and 2,935.76

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Solution

The fourth proportional to 12,169.76, 18,254.64 and 2,935.76 is: 4,403.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,169.76 : 18,254.64 = 2,935.76 : x
  2. Step 2: Convert to fraction form
    12,169.76/18,254.64 = 2,935.76/x
  3. Step 3: Cross multiply
    12,169.76x = 18,254.64 × 2,935.76
  4. Step 4: Simplify right side
    12,169.76x = 53,591,241.93
  5. Step 5: Solve for x
    x = 53,591,241.93/12,169.76
  6. Step 6: Final answer
    x = 4,403.64

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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.