Home / 18,725.28-25,845.84-11,647.68

Finding the Fourth Proportional to 18,725.28, 25,845.84 and 11,647.68

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Solution

The fourth proportional to 18,725.28, 25,845.84 and 11,647.68 is: 16,076.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.28 : 25,845.84 = 11,647.68 : x
  2. Step 2: Convert to fraction form
    18,725.28/25,845.84 = 11,647.68/x
  3. Step 3: Cross multiply
    18,725.28x = 25,845.84 × 11,647.68
  4. Step 4: Simplify right side
    18,725.28x = 301,044,073.65
  5. Step 5: Solve for x
    x = 301,044,073.65/18,725.28
  6. Step 6: Final answer
    x = 16,076.88

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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.