Home / 18,786.57-25,903.11-12,072.48

Finding the Fourth Proportional to 18,786.57, 25,903.11 and 12,072.48

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Solution

The fourth proportional to 18,786.57, 25,903.11 and 12,072.48 is: 16,645.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.57 : 25,903.11 = 12,072.48 : x
  2. Step 2: Convert to fraction form
    18,786.57/25,903.11 = 12,072.48/x
  3. Step 3: Cross multiply
    18,786.57x = 25,903.11 × 12,072.48
  4. Step 4: Simplify right side
    18,786.57x = 312,714,777.41
  5. Step 5: Solve for x
    x = 312,714,777.41/18,786.57
  6. Step 6: Final answer
    x = 16,645.66

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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.