Home / 20,140.92-27,789.48-12,575.52

Finding the Fourth Proportional to 20,140.92, 27,789.48 and 12,575.52

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Solution

The fourth proportional to 20,140.92, 27,789.48 and 12,575.52 is: 17,351.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.92 : 27,789.48 = 12,575.52 : x
  2. Step 2: Convert to fraction form
    20,140.92/27,789.48 = 12,575.52/x
  3. Step 3: Cross multiply
    20,140.92x = 27,789.48 × 12,575.52
  4. Step 4: Simplify right side
    20,140.92x = 349,467,161.53
  5. Step 5: Solve for x
    x = 349,467,161.53/20,140.92
  6. Step 6: Final answer
    x = 17,351.10

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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.