Home / 18,279.09-25,225.61-11,209.41

Finding the Fourth Proportional to 18,279.09, 25,225.61 and 11,209.41

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Solution

The fourth proportional to 18,279.09, 25,225.61 and 11,209.41 is: 15,469.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.09 : 25,225.61 = 11,209.41 : x
  2. Step 2: Convert to fraction form
    18,279.09/25,225.61 = 11,209.41/x
  3. Step 3: Cross multiply
    18,279.09x = 25,225.61 × 11,209.41
  4. Step 4: Simplify right side
    18,279.09x = 282,764,148.94
  5. Step 5: Solve for x
    x = 282,764,148.94/18,279.09
  6. Step 6: Final answer
    x = 15,469.27

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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.