Home / 18,215.70-25,136.79-10,257.78

Finding the Fourth Proportional to 18,215.70, 25,136.79 and 10,257.78

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Solution

The fourth proportional to 18,215.70, 25,136.79 and 10,257.78 is: 14,155.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215.70 : 25,136.79 = 10,257.78 : x
  2. Step 2: Convert to fraction form
    18,215.70/25,136.79 = 10,257.78/x
  3. Step 3: Cross multiply
    18,215.70x = 25,136.79 × 10,257.78
  4. Step 4: Simplify right side
    18,215.70x = 257,847,661.73
  5. Step 5: Solve for x
    x = 257,847,661.73/18,215.70
  6. Step 6: Final answer
    x = 14,155.24

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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.