Home / 15,171.03-20,933.96-8,455.86

Finding the Fourth Proportional to 15,171.03, 20,933.96 and 8,455.86

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Solution

The fourth proportional to 15,171.03, 20,933.96 and 8,455.86 is: 11,667.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,171.03 : 20,933.96 = 8,455.86 : x
  2. Step 2: Convert to fraction form
    15,171.03/20,933.96 = 8,455.86/x
  3. Step 3: Cross multiply
    15,171.03x = 20,933.96 × 8,455.86
  4. Step 4: Simplify right side
    15,171.03x = 177,014,592.73
  5. Step 5: Solve for x
    x = 177,014,592.73/15,171.03
  6. Step 6: Final answer
    x = 11,667.94

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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.