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Finding the Fourth Proportional to 12,367.76, 18,551.64 and 3,134.48

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Solution

The fourth proportional to 12,367.76, 18,551.64 and 3,134.48 is: 4,701.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,367.76 : 18,551.64 = 3,134.48 : x
  2. Step 2: Convert to fraction form
    12,367.76/18,551.64 = 3,134.48/x
  3. Step 3: Cross multiply
    12,367.76x = 18,551.64 × 3,134.48
  4. Step 4: Simplify right side
    12,367.76x = 58,149,744.55
  5. Step 5: Solve for x
    x = 58,149,744.55/12,367.76
  6. Step 6: Final answer
    x = 4,701.72

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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.