Home / 20,620.64-28,456.48-11,667.94

Finding the Fourth Proportional to 20,620.64, 28,456.48 and 11,667.94

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Solution

The fourth proportional to 20,620.64, 28,456.48 and 11,667.94 is: 16,101.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.64 : 28,456.48 = 11,667.94 : x
  2. Step 2: Convert to fraction form
    20,620.64/28,456.48 = 11,667.94/x
  3. Step 3: Cross multiply
    20,620.64x = 28,456.48 × 11,667.94
  4. Step 4: Simplify right side
    20,620.64x = 332,028,501.25
  5. Step 5: Solve for x
    x = 332,028,501.25/20,620.64
  6. Step 6: Final answer
    x = 16,101.76

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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.