Home / 20,667.53-28,519.91-11,592.39

Finding the Fourth Proportional to 20,667.53, 28,519.91 and 11,592.39

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Solution

The fourth proportional to 20,667.53, 28,519.91 and 11,592.39 is: 15,996.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,667.53 : 28,519.91 = 11,592.39 : x
  2. Step 2: Convert to fraction form
    20,667.53/28,519.91 = 11,592.39/x
  3. Step 3: Cross multiply
    20,667.53x = 28,519.91 × 11,592.39
  4. Step 4: Simplify right side
    20,667.53x = 330,613,819.20
  5. Step 5: Solve for x
    x = 330,613,819.20/20,667.53
  6. Step 6: Final answer
    x = 15,996.78

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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.