Home / 13,664.64-20,487.24-6,540.72

Finding the Fourth Proportional to 13,664.64, 20,487.24 and 6,540.72

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Solution

The fourth proportional to 13,664.64, 20,487.24 and 6,540.72 is: 9,806.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.64 : 20,487.24 = 6,540.72 : x
  2. Step 2: Convert to fraction form
    13,664.64/20,487.24 = 6,540.72/x
  3. Step 3: Cross multiply
    13,664.64x = 20,487.24 × 6,540.72
  4. Step 4: Simplify right side
    13,664.64x = 134,001,300.41
  5. Step 5: Solve for x
    x = 134,001,300.41/13,664.64
  6. Step 6: Final answer
    x = 9,806.43

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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.