Home / 18,222.66-25,139.97-11,136.78

Finding the Fourth Proportional to 18,222.66, 25,139.97 and 11,136.78

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Solution

The fourth proportional to 18,222.66, 25,139.97 and 11,136.78 is: 15,364.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,222.66 : 25,139.97 = 11,136.78 : x
  2. Step 2: Convert to fraction form
    18,222.66/25,139.97 = 11,136.78/x
  3. Step 3: Cross multiply
    18,222.66x = 25,139.97 × 11,136.78
  4. Step 4: Simplify right side
    18,222.66x = 279,978,315.10
  5. Step 5: Solve for x
    x = 279,978,315.10/18,222.66
  6. Step 6: Final answer
    x = 15,364.29

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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.