Home / 18,725.85-25,789.05-18,317.61

Finding the Fourth Proportional to 18,725.85, 25,789.05 and 18,317.61

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Solution

The fourth proportional to 18,725.85, 25,789.05 and 18,317.61 is: 25,226.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.85 : 25,789.05 = 18,317.61 : x
  2. Step 2: Convert to fraction form
    18,725.85/25,789.05 = 18,317.61/x
  3. Step 3: Cross multiply
    18,725.85x = 25,789.05 × 18,317.61
  4. Step 4: Simplify right side
    18,725.85x = 472,393,760.17
  5. Step 5: Solve for x
    x = 472,393,760.17/18,725.85
  6. Step 6: Final answer
    x = 25,226.83

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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.