Home / 12,805.92-19,195.56-5,404.20

Finding the Fourth Proportional to 12,805.92, 19,195.56 and 5,404.20

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Solution

The fourth proportional to 12,805.92, 19,195.56 and 5,404.20 is: 8,100.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,805.92 : 19,195.56 = 5,404.20 : x
  2. Step 2: Convert to fraction form
    12,805.92/19,195.56 = 5,404.20/x
  3. Step 3: Cross multiply
    12,805.92x = 19,195.56 × 5,404.20
  4. Step 4: Simplify right side
    12,805.92x = 103,736,645.35
  5. Step 5: Solve for x
    x = 103,736,645.35/12,805.92
  6. Step 6: Final answer
    x = 8,100.68

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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.