Home / 13,923.57-20,889.20-6,429.42

Finding the Fourth Proportional to 13,923.57, 20,889.20 and 6,429.42

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Solution

The fourth proportional to 13,923.57, 20,889.20 and 6,429.42 is: 9,645.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,923.57 : 20,889.20 = 6,429.42 : x
  2. Step 2: Convert to fraction form
    13,923.57/20,889.20 = 6,429.42/x
  3. Step 3: Cross multiply
    13,923.57x = 20,889.20 × 6,429.42
  4. Step 4: Simplify right side
    13,923.57x = 134,305,335.82
  5. Step 5: Solve for x
    x = 134,305,335.82/13,923.57
  6. Step 6: Final answer
    x = 9,645.90

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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.