Home / 18,272.81-25,217.09-11,197.87

Finding the Fourth Proportional to 18,272.81, 25,217.09 and 11,197.87

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Solution

The fourth proportional to 18,272.81, 25,217.09 and 11,197.87 is: 15,453.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,272.81 : 25,217.09 = 11,197.87 : x
  2. Step 2: Convert to fraction form
    18,272.81/25,217.09 = 11,197.87/x
  3. Step 3: Cross multiply
    18,272.81x = 25,217.09 × 11,197.87
  4. Step 4: Simplify right side
    18,272.81x = 282,377,618.56
  5. Step 5: Solve for x
    x = 282,377,618.56/18,272.81
  6. Step 6: Final answer
    x = 15,453.43

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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.