Home / 20,136.53-27,789.91-12,481.31

Finding the Fourth Proportional to 20,136.53, 27,789.91 and 12,481.31

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Solution

The fourth proportional to 20,136.53, 27,789.91 and 12,481.31 is: 17,225.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.53 : 27,789.91 = 12,481.31 : x
  2. Step 2: Convert to fraction form
    20,136.53/27,789.91 = 12,481.31/x
  3. Step 3: Cross multiply
    20,136.53x = 27,789.91 × 12,481.31
  4. Step 4: Simplify right side
    20,136.53x = 346,854,590.06
  5. Step 5: Solve for x
    x = 346,854,590.06/20,136.53
  6. Step 6: Final answer
    x = 17,225.14

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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.