Home / 20,404.08-30,578.45-18,355.82

Finding the Fourth Proportional to 20,404.08, 30,578.45 and 18,355.82

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Solution

The fourth proportional to 20,404.08, 30,578.45 and 18,355.82 is: 27,508.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404.08 : 30,578.45 = 18,355.82 : x
  2. Step 2: Convert to fraction form
    20,404.08/30,578.45 = 18,355.82/x
  3. Step 3: Cross multiply
    20,404.08x = 30,578.45 × 18,355.82
  4. Step 4: Simplify right side
    20,404.08x = 561,292,279.41
  5. Step 5: Solve for x
    x = 561,292,279.41/20,404.08
  6. Step 6: Final answer
    x = 27,508.83

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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.