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Finding the Fourth Proportional to 13,458.76, 20,217.02 and 13,015.96

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Solution

The fourth proportional to 13,458.76, 20,217.02 and 13,015.96 is: 19,551.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458.76 : 20,217.02 = 13,015.96 : x
  2. Step 2: Convert to fraction form
    13,458.76/20,217.02 = 13,015.96/x
  3. Step 3: Cross multiply
    13,458.76x = 20,217.02 × 13,015.96
  4. Step 4: Simplify right side
    13,458.76x = 263,143,923.64
  5. Step 5: Solve for x
    x = 263,143,923.64/13,458.76
  6. Step 6: Final answer
    x = 19,551.87

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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.