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Finding the Fourth Proportional to 18,169.70, 25,074.30 and 10,512.81

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Solution

The fourth proportional to 18,169.70, 25,074.30 and 10,512.81 is: 14,507.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,169.70 : 25,074.30 = 10,512.81 : x
  2. Step 2: Convert to fraction form
    18,169.70/25,074.30 = 10,512.81/x
  3. Step 3: Cross multiply
    18,169.70x = 25,074.30 × 10,512.81
  4. Step 4: Simplify right side
    18,169.70x = 263,601,229.14
  5. Step 5: Solve for x
    x = 263,601,229.14/18,169.70
  6. Step 6: Final answer
    x = 14,507.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.