Home / 18,667.26-28,001.25-5,519.61

Finding the Fourth Proportional to 18,667.26, 28,001.25 and 5,519.61

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Solution

The fourth proportional to 18,667.26, 28,001.25 and 5,519.61 is: 8,279.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,667.26 : 28,001.25 = 5,519.61 : x
  2. Step 2: Convert to fraction form
    18,667.26/28,001.25 = 5,519.61/x
  3. Step 3: Cross multiply
    18,667.26x = 28,001.25 × 5,519.61
  4. Step 4: Simplify right side
    18,667.26x = 154,555,979.51
  5. Step 5: Solve for x
    x = 154,555,979.51/18,667.26
  6. Step 6: Final answer
    x = 8,279.52

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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.