Home / 13,664.53-20,450.50-8,402.87

Finding the Fourth Proportional to 13,664.53, 20,450.50 and 8,402.87

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Solution

The fourth proportional to 13,664.53, 20,450.50 and 8,402.87 is: 12,575.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.53 : 20,450.50 = 8,402.87 : x
  2. Step 2: Convert to fraction form
    13,664.53/20,450.50 = 8,402.87/x
  3. Step 3: Cross multiply
    13,664.53x = 20,450.50 × 8,402.87
  4. Step 4: Simplify right side
    13,664.53x = 171,842,923.05
  5. Step 5: Solve for x
    x = 171,842,923.05/13,664.53
  6. Step 6: Final answer
    x = 12,575.84

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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.