Home / 20,317.91-28,027.44-11,819.08

Finding the Fourth Proportional to 20,317.91, 28,027.44 and 11,819.08

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Solution

The fourth proportional to 20,317.91, 28,027.44 and 11,819.08 is: 16,303.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.91 : 28,027.44 = 11,819.08 : x
  2. Step 2: Convert to fraction form
    20,317.91/28,027.44 = 11,819.08/x
  3. Step 3: Cross multiply
    20,317.91x = 28,027.44 × 11,819.08
  4. Step 4: Simplify right side
    20,317.91x = 331,258,555.56
  5. Step 5: Solve for x
    x = 331,258,555.56/20,317.91
  6. Step 6: Final answer
    x = 16,303.77

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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.