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Finding the Fourth Proportional to 18,148.59, 27,183.20 and 12,867.59

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Solution

The fourth proportional to 18,148.59, 27,183.20 and 12,867.59 is: 19,273.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,148.59 : 27,183.20 = 12,867.59 : x
  2. Step 2: Convert to fraction form
    18,148.59/27,183.20 = 12,867.59/x
  3. Step 3: Cross multiply
    18,148.59x = 27,183.20 × 12,867.59
  4. Step 4: Simplify right side
    18,148.59x = 349,782,276.11
  5. Step 5: Solve for x
    x = 349,782,276.11/18,148.59
  6. Step 6: Final answer
    x = 19,273.25

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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.