Home / 18,667.22-28,005.08-5,519.09

Finding the Fourth Proportional to 18,667.22, 28,005.08 and 5,519.09

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Solution

The fourth proportional to 18,667.22, 28,005.08 and 5,519.09 is: 8,279.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,667.22 : 28,005.08 = 5,519.09 : x
  2. Step 2: Convert to fraction form
    18,667.22/28,005.08 = 5,519.09/x
  3. Step 3: Cross multiply
    18,667.22x = 28,005.08 × 5,519.09
  4. Step 4: Simplify right side
    18,667.22x = 154,562,599.39
  5. Step 5: Solve for x
    x = 154,562,599.39/18,667.22
  6. Step 6: Final answer
    x = 8,279.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.