Home / 20,247.83-27,929.97-15,764.48

Finding the Fourth Proportional to 20,247.83, 27,929.97 and 15,764.48

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Solution

The fourth proportional to 20,247.83, 27,929.97 and 15,764.48 is: 21,745.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,247.83 : 27,929.97 = 15,764.48 : x
  2. Step 2: Convert to fraction form
    20,247.83/27,929.97 = 15,764.48/x
  3. Step 3: Cross multiply
    20,247.83x = 27,929.97 × 15,764.48
  4. Step 4: Simplify right side
    20,247.83x = 440,301,313.82
  5. Step 5: Solve for x
    x = 440,301,313.82/20,247.83
  6. Step 6: Final answer
    x = 21,745.61

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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.