Home / 13,564.40-20,322.68-11,879.73

Finding the Fourth Proportional to 13,564.40, 20,322.68 and 11,879.73

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Solution

The fourth proportional to 13,564.40, 20,322.68 and 11,879.73 is: 17,798.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,564.40 : 20,322.68 = 11,879.73 : x
  2. Step 2: Convert to fraction form
    13,564.40/20,322.68 = 11,879.73/x
  3. Step 3: Cross multiply
    13,564.40x = 20,322.68 × 11,879.73
  4. Step 4: Simplify right side
    13,564.40x = 241,427,951.28
  5. Step 5: Solve for x
    x = 241,427,951.28/13,564.40
  6. Step 6: Final answer
    x = 17,798.65

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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.