Home / 18,215.89-25,137.43-10,257.94

Finding the Fourth Proportional to 18,215.89, 25,137.43 and 10,257.94

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Solution

The fourth proportional to 18,215.89, 25,137.43 and 10,257.94 is: 14,155.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215.89 : 25,137.43 = 10,257.94 : x
  2. Step 2: Convert to fraction form
    18,215.89/25,137.43 = 10,257.94/x
  3. Step 3: Cross multiply
    18,215.89x = 25,137.43 × 10,257.94
  4. Step 4: Simplify right side
    18,215.89x = 257,858,185.85
  5. Step 5: Solve for x
    x = 257,858,185.85/18,215.89
  6. Step 6: Final answer
    x = 14,155.68

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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.