Home / 20,709.03-31,067.19-8,856.30

Finding the Fourth Proportional to 20,709.03, 31,067.19 and 8,856.30

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Solution

The fourth proportional to 20,709.03, 31,067.19 and 8,856.30 is: 13,286.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.03 : 31,067.19 = 8,856.30 : x
  2. Step 2: Convert to fraction form
    20,709.03/31,067.19 = 8,856.30/x
  3. Step 3: Cross multiply
    20,709.03x = 31,067.19 × 8,856.30
  4. Step 4: Simplify right side
    20,709.03x = 275,140,354.80
  5. Step 5: Solve for x
    x = 275,140,354.80/20,709.03
  6. Step 6: Final answer
    x = 13,286.01

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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.