Home / 18,788.58-25,930.20-11,136.41

Finding the Fourth Proportional to 18,788.58, 25,930.20 and 11,136.41

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Solution

The fourth proportional to 18,788.58, 25,930.20 and 11,136.41 is: 15,369.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,788.58 : 25,930.20 = 11,136.41 : x
  2. Step 2: Convert to fraction form
    18,788.58/25,930.20 = 11,136.41/x
  3. Step 3: Cross multiply
    18,788.58x = 25,930.20 × 11,136.41
  4. Step 4: Simplify right side
    18,788.58x = 288,769,338.58
  5. Step 5: Solve for x
    x = 288,769,338.58/18,788.58
  6. Step 6: Final answer
    x = 15,369.41

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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.